Question 1

Vectors   and  
Are shown in the figure. What is  
?

Accepted Answer

A)  31.8 
B)  -32.0   - 2.00
  
C)  1028 
D)  34.0 
E)  -2.00   - 32.0
  
A)  31.8 
B)  -32.0   - 2.00
  
C)  1028 
D)  34.0 
E)  -2.00   - 32.0
  A

Question 2

Two blocks are connected by a string that goes over an ideal pulley as shown in the figure.Block A has a mass of 3.00 kg and can slide over a rough plane inclined 30.0° to the horizontal.The coefficient of kinetic friction between block A and the plane is 0.400.Block B has a mass of 2.77 kg.What is the acceleration of the blocks?

Accepted Answer

A)  0.392 m/s2 
B)  1.96 m/s2 
C)  3.12 m/s2 
D)  5.35 m/s2 
E)  0.00 m/s2 
A)  0.392 m/s2 
B)  1.96 m/s2 
C)  3.12 m/s2 
D)  5.35 m/s2 
E)  0.00 m/s2 A

Question 3

A projectile is fired from point 0 at the edge of a cliff,with initial velocity components of v0x = 60.0 m/s and v0y = 175 m/s,as shown in the figure.The projectile rises and then falls into the sea at point P.The time of flight of the projectile is 40.0 s,and it experiences no appreciable air resistance in flight.What is the height of the cliff?

Accepted Answer

840 m

Question 4

Vector   = -3.00  
+ 3)00  
And vector  
= 3)00  
+ 4)00  
What is vector  
=  
+  
?

Accepted Answer

A)  0.00   + 3.00
  
B)  7.00   + 7.00
  
C)  -3.00   + 7.00
  
D)  0.00   + 7.00
  
E)  -3.00   -3.00
  
A)  0.00   + 3.00
  
B)  7.00   + 7.00
  
C)  -3.00   + 7.00
  
D)  0.00   + 7.00
  
E)  -3.00   -3.00

Question 5

A hobby rocket reaches a height of 72.3 m and lands 111 m from the launch point with no air resistance.What was the angle of launch?

Accepted Answer

A)  69.0° 
B)  67.4° 
C)  22.6° 
D)  44.8° 
A)  69.0° 
B)  67.4° 
C)  22.6° 
D)  44.8°

Question 6

A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle.The coefficients of static and kinetic friction between the hockey puck and the metal ramp are μs = 0.40 and μk = 0.30,respectively.The puck's initial speed is 63 m/s. What vertical height does the puck reach above its starting point?

Accepted Answer

A)  130 m 
B)  270 m 
C)  200 m 
D)  66 m 
A)  130 m 
B)  270 m 
C)  200 m 
D)  66 m

Question 7

Vector   has a magnitude 5.00 and points in a direction 40.0° clockwise from the negative y axis. What are the x and y components of vector

Accepted Answer

A)  Ax = 3.83 and Ay = 3.21 
B)  Ax = 3.83 and Ay = -3.21 
C)  Ax = -3.21 and Ay = -3.83 
D)  Ax = -3.21 and Ay = 3.83 
E)  Ax = 4.29 and Ay = 2.16 
A)  Ax = 3.83 and Ay = 3.21 
B)  Ax = 3.83 and Ay = -3.21 
C)  Ax = -3.21 and Ay = -3.83 
D)  Ax = -3.21 and Ay = 3.83 
E)  Ax = 4.29 and Ay = 2.16

Question 8

A system comprised blocks,a light frictionless pulley,and connecting ropes is shown in the figure.The 9.0-kg block is on a perfectly smooth horizontal table.The surfaces of the 12-kg block are rough,with μk = 0.30 between the block and the table.If the 5.0-kg block accelerates downward when it is released,find its acceleration.

Accepted Answer

A)  1.0 m/s2 
B)  1.2 m/s2 
C)  1.4 m/s2 
D)  1.6 m/s2 
E)  1.8 m/s2 
A)  1.0 m/s2 
B)  1.2 m/s2 
C)  1.4 m/s2 
D)  1.6 m/s2 
E)  1.8 m/s2

Question 9

If you set the cruise control of your car to a certain speed and take a turn,the speed of the car will remain the same.Is the car accelerating?

Accepted Answer

A)  Yes 
B)  No 
A)  Yes 
B)  No

Question 10

Jason takes off from rest across level water on his jet-powered skis.The combined mass of Jason and his skis is 75 kg (the mass of the fuel is negligible).The skis have a thrust of 200 N and a coefficient of kinetic friction on water of 0.10.Unfortunately,the skis run out of fuel after only 67 s.How far has Jason traveled when he finally coasts to a stop?

Accepted Answer

A)  10,000 m 
B)  7600 m 
C)  5400 m 
D)  3800 m 
A)  10,000 m 
B)  7600 m 
C)  5400 m 
D)  3800 m

Question 11

In the figure,two boxes,each of mass 24 kg,are at rest and connected as shown.The coefficient of kinetic friction between the inclined surface and the box is 0.31.Find the speed of the boxes just after they have moved 1.6 m.

Accepted Answer

The answer of In the figure,two boxes,each of mass 24...

Question 12

If the dot product of two nonzero vectors is zero,the vectors must be perpendicular to each other.

Accepted Answer

A) True 
 B)False

Question 13

A rock is thrown at a window that is located 18.0 m above the ground. The rock is thrown at an angle of 40.0° above horizontal. The rock is thrown from a height of 2.00 m above the ground with a speed of 30.0 m/s and experiences no appreciable air resistance. If the rock strikes the window on its upward trajectory,from what horizontal distance from the window was it released?

Accepted Answer

A)  53.2 m 
B)  48.7 m 
C)  71.6 m 
D)  29.8 m 
E)  27.3 m 
A)  53.2 m 
B)  48.7 m 
C)  71.6 m 
D)  29.8 m 
E)  27.3 m

Question 14

What is the magnitude of   +  
+  
,where  
= 1)00  
+ 4)00  
- 1)00   ,  
= 3)00  
- 1)00  
- 4)00  
And  
= -1.00  
+ 1)00  
?

Accepted Answer

A)  7.07 
B)  2.00 
C)  10.76 
D)  6.78 
E)  8.12 
A)  7.07 
B)  2.00 
C)  10.76 
D)  6.78 
E)  8.12

Question 15

The scalar product of vector   = 3.00  
+ 2)00  
And vector  
Is 10.0. Which of the following vectors could be vector  
?

Accepted Answer

A)  2.00   + 4.00
  
B)  4.00   + 6.00
  
C)  5.00   + 4.00
  
D)  12.0   
E)  2.00   + 2.00
  
A)  2.00   + 4.00
  
B)  4.00   + 6.00
  
C)  5.00   + 4.00
  
D)  12.0   
E)  2.00   + 2.00

Question 16

Three objects are connected as shown in the figure.The strings and frictionless pulleys have negligible masses,and the coefficient of kinetic friction between the 2.0-kg block and the table is 0.25.What is the acceleration of the 2.0-kg block?

Accepted Answer

A)  2.5 m/μs = 0.50 and μk = 0.30 
B)  1.7 ms2 
C)  3.2 m/s2 
D)  4.0 m/s2 
A)  2.5 m/μs = 0.50 and μk = 0.30 
B)  1.7 ms2 
C)  3.2 m/s2 
D)  4.0 m/s2

Question 17

A 1.2-kg spring-activated toy bomb slides on a smooth surface along the x-axis with a speed of 0.50 m/s.At the origin 0,the bomb explodes into two fragments.Fragment 1 has a mass of 0.40 kg and a speed of 0.90 m/s along the negative y-axis.In the figure,the energy released by the explosion is closest to

Accepted Answer

A)  0.20 J. 
B)  0.24 J. 
C)  0.28 J. 
D)  0.32 J. 
E)  0.36 J. 
A)  0.20 J. 
B)  0.24 J. 
C)  0.28 J. 
D)  0.32 J. 
E)  0.36 J.

Question 18

A 3.00-kg ball swings rapidly in a complete vertical circle of radius 2.00 m by a light string that is fixed at one end.The ball moves so fast that the string is always taut and perpendicular to the velocity of the ball.As the ball swings from its lowest point to its highest point

Accepted Answer

A)  the work done on it by gravity and the work done on it by the tension in the string are both equal to -118 J. 
B)  the work done on it by gravity is -118 J and the work done on it by the tension in the string is +118 J. 
C)  the work done on it by gravity is +118 J and the work done on it by the tension in the string is -118 J. 
D)  the work done on it by gravity is -118 J and the work done on it by the tension in the string is zero. 
E)  the work done on it by gravity and the work done on it by the tension in the string are both equal to zero. 
A)  the work done on it by gravity and the work done on it by the tension in the string are both equal to -118 J. 
B)  the work done on it by gravity is -118 J and the work done on it by the tension in the string is +118 J. 
C)  the work done on it by gravity is +118 J and the work done on it by the tension in the string is -118 J. 
D)  the work done on it by gravity is -118 J and the work done on it by the tension in the string is zero. 
E)  the work done on it by gravity and the work done on it by the tension in the string are both equal to zero.

Question 19

A car heading north collides at an intersection with a truck of the same mass as the car heading east.If they lock together and travel at 28 m/s at 46° north of east just after the collision,how fast was the car initially traveling? Assume that any other unbalanced forces are negligible.

Accepted Answer

A)  40 m/s 
B)  20 m/s 
C)  80 m/s 
D)  30 m/s 
A)  40 m/s 
B)  20 m/s 
C)  80 m/s 
D)  30 m/s

Question 20

For general projectile motion,when the projectile is at the highest point of its trajectory

Accepted Answer

A)  its acceleration is zero. 
B)  its velocity is perpendicular to the acceleration. 
C)  its velocity and acceleration are both zero. 
D)  the horizontal component of its velocity is zero. 
E)  the horizontal and vertical components of its velocity are zero. 
A)  its acceleration is zero. 
B)  its velocity is perpendicular to the acceleration. 
C)  its velocity and acceleration are both zero. 
D)  the horizontal component of its velocity is zero. 
E)  the horizontal and vertical components of its velocity are zero.

Exam 10: Motion in a Plane

Vectors and Are shown in the figure. What is ?

Vector = -3.00 + 3)00 And vector = 3)00 + 4)00 What is vector = + ?

A hobby rocket reaches a height of 72.3 m and lands 111 m from the launch point with no air resistance.What was the angle of launch?

Vector has a magnitude 5.00 and points in a direction 40.0° clockwise from the negative y axis. What are the x and y components of vector

If you set the cruise control of your car to a certain speed and take a turn,the speed of the car will remain the same.Is the car accelerating?

In the figure,two boxes,each of mass 24 kg,are at rest and connected as shown.The coefficient of kinetic friction between the inclined surface and the box is 0.31.Find the speed of the boxes just after they have moved 1.6 m.

If the dot product of two nonzero vectors is zero,the vectors must be perpendicular to each other.

What is the magnitude of + + ,where = 1)00 + 4)00 - 1)00 , = 3)00 - 1)00 - 4)00 And = -1.00 + 1)00 ?

The scalar product of vector = 3.00 + 2)00 And vector Is 10.0. Which of the following vectors could be vector ?

Three objects are connected as shown in the figure.The strings and frictionless pulleys have negligible masses,and the coefficient of kinetic friction between the 2.0-kg block and the table is 0.25.What is the acceleration of the 2.0-kg block?

A 3.00-kg ball swings rapidly in a complete vertical circle of radius 2.00 m by a light string that is fixed at one end.The ball moves so fast that the string is always taut and perpendicular to the velocity of the ball.As the ball swings from its lowest point to its highest point

A car heading north collides at an intersection with a truck of the same mass as the car heading east.If they lock together and travel at 28 m/s at 46° north of east just after the collision,how fast was the car initially traveling? Assume that any other unbalanced forces are negligible.

For general projectile motion,when the projectile is at the highest point of its trajectory

Foundations

A: Foundations

Motion in One Dimension

Acceleration

Momentum

Energy

Principle of Relativity

Interactions

Force

Work

Motion in a Circle

Torque

Gravity

Special Relativity

Periodic Motion

Waves in One Dimension

Waves in Two and Three Dimensions

Fluids

Entropy

Energy Transferred Thermally

Degradation of Energy

Electric Interactions

The Electric Field

Gausss Law

Work and Energy in Electrostatics

Charge Separation and Storage

Magnetic Interactions

Magnetic Fields of Charged Particles in Motion

Changing Magnetic Fields

Changing Electric Fields

Electric Circuits

Electronics

Ray Optics

Wave and Particle Optics

Filters