Exam 4: Newtons Second Law of Motion: Force and Acceleration

A skydiver steps from a helicopter and falls for a few seconds until he reaches his terminal velocity.Thereafter,until he opens his parachute,his acceleration

Two objects of the same size,but unequal weights are dropped from a tall tower.Taking air resistance into consideration,the object to hit the ground first will be the

An object is pulled northward by a force of 10 N and at the same time another force of 15 N pulls it southward.The magnitude of the resultant force on the object is

The brakes of a speeding truck are slammed on and it skids to a stop.If the truck were heavily loaded so that it had twice the total mass,the skidding distance would be

A falling skydiver of mass 100 kg experiences 500 N of air resistance.The acceleration of the skydiver is

A force of 1 N accelerates a mass of 1 kg at the rate of 1 m/s2.The acceleration of a mass of 2 kg acted upon by a net force of 2 N is

A 10-kg brick and a 1-kg book are dropped in a vacuum.The force of gravity on the 10-kg brick is

An astronaut on another planet drops a 1-kg rock from rest.The astronaut notices that the rock falls 2 meters straight down in one second.On this planet,how much does the rock weigh?

A car traveling at 22 m/s comes to an abrupt halt in 0.1 second when it hits a tree.What is the deceleration in meters per second per second of the car?

A 10-kilogram block with an initial velocity of 10 m/s slides 10 meters across a horizontal surface and comes to rest.It takes the block 2 seconds to stop.The stopping force acting on the block is about

The force required to maintain an object at a constant velocity in free space is equal to

A lightweight feather slides off a table and falls through the air until it reaches the floor.During the time of its fall,its acceleration

A 10-N falling object encounters 4 N of air resistance.The net force on the object is

A push on a 1-kg brick accelerates it.Neglecting friction,to equally accelerate a 10-kg brick,one would have to push with

In which case would you have the largest mass of gold? If your chunk of gold weighed 1 N on the

If an object of constant mass experiences a constant net force,it will have a constant

A 500-N parachutist opens his chute and experiences an air resistance force of 800 N.The net force on the parachutist is

If a non-rotating object has no acceleration,then we can say for certain that it is

The maximum acceleration of a car while towing a second car twice its mass,compared to its acceleration with no car in tow,is

A bag of groceries has a mass of 10 kilograms and a weight of