Exam 2: Waves and Sound

A rifle bullet shot horizontally at a velocity of 9.8 m/s has a horizontal acceleration of ______________.

A car travels at a constant speed of 100.0 km/h around a circular track with a diameter of 1.00 km. What is the magnitude of the car's centripetal acceleration, and what supplies this?

What is the displacement of a hiker who travels 3.0 km east and then 4.0 km north?

Speed is a(n) ______________ quantity.

On a trip, a family travels 200 km in 2.5 h on the first day, 300 km in 4.0 h on the second day, and 250 km in 3.5 h on the third day. What was the average speed, in kilometers per hour, for the total trip?

The distance traveled by a dropped object in free fall is directly proportional to

Two objects are in uniform circular motion at the same speed but at different radii. The one with the ______________ radius has the largest centripetal acceleration.

The magnitudes of two horizontal displacements are 1 m and 9 m, respectively. Given that the vectors may be in either the plus or the minus direction, they cannot be added together to give a total displacement of

The following data refer to a car traveling west: t (s) 0 1 2 3 4 -------------------------- v (m/s) 30 25 20 15 10 Find the magnitude and direction of the acceleration.

A golfer hits a ball on a level fairway at an angle of 35° relative to the horizontal, and it lands on the green. Another golfer hits a ball with the same speed but at an angle of 55°, and it lands on the green by the other ball. Which statement is accurate for this situation?

In straight-line motion, if a moving object slows down, the direction of the acceleration is ______________ the direction of the velocity.

On Earth, the magnitude of the acceleration of a vertical projectile at its maximum height is equal to ______________.

A car is moving down a freeway in a straight line at a constant rate of 24.0 m/s for 4.0 s. Its acceleration is

For which of the following is the acceleration constant?

An object moving in a circle with a constant speed has a(n) ______________ directed toward the center of the circle.

If an object has a constant velocity, then its acceleration is ______________.

An object travels in a circle of radius 10.0 m with a constant speed of 3.0 m/s. What is the direction of its acceleration?

Which one of the following is not an area of physics?

A(n) ______________ quantity has both magnitude and direction.

In straight-line motion, if a moving object speeds up, the direction of the acceleration is ______________ the direction of the velocity.