Velocity in the ___ direction is constant for projectiles.

The horizontal and vertical motions are tied together by ___.

A particle travels to the right at a constant rate of 3 m/s. It suddenly is given a vertical acceleration of 2 m/s2 for 2 s. What is the speed at this time?

Four forces act on an object.

If the object is accelerating to the right, compare the forces.

Four forces act on an object.

If the object is accelerating to the left, compare the forces.

Four forces act on an object.

If the object is accelerating upward, compare the forces.

Four forces act on an object.

If the object is accelerating downward, compare the forces.

When a 100 N bag of nails hangs motionless from 5 vertical strands of rope, how much tension is exerted in each strand?

A 450 kg bear grasping a vertical tree slides down at constant velocity. The acceleration of gravity is 10 m/s². What is the friction force that acts on the bear?

A heavy object and a light object are dropped at the same time from rest in a vacuum. The heavier object reaches the ground

A ball is thrown upward. After reaching a maximum height, it continues falling back toward Earth. It was in the air a total of 10 s. How long was the ball traveling upward?

A ball is thrown upward. After reaching a maximum height, it continues falling back toward Earth. What was the ball's speed at its maximum height?

A projectile is fired straight up at a speed of 10 m/s. How long does it take to reach the top of its motion?

The acceleration due to gravity is 10 m/s².

How far will a freely falling object travel during the first 15 s after it is released from a position of rest?

Consider the acceleration of gravity to be 10 m/s².

The opposing force that resists motion when two surfaces come into contact is called

The force that causes object to follow circular paths is called

The frictional force between two surfaces in motion is called

The frictional force between two surfaces that are at rest is called

The force of friction acting on a sliding crate is 200 N.

How much force must be applied to maintain a constant velocity?

The force of friction acting on a sliding crate is 198 N.

What will be the net force acting on the crate to maintain a constant velocity?

A horizontal force of 100 N is used to pull a crate, which weighs 200 N, at constant velocity across a horizontal floor.

What is the coefficient of kinetic friction?

An object is at rest. Which of the following must be true?

A soccer ball moves faster when it is kicked harder.

This is an example of which of the following laws?

A soccer ball pushes down on the ground, so the ground pushes back up on the ball.

This is an example of which of the following laws?

A soccer ball will sit at rest on the field until someone kicks it.

This is an example of which of the following laws?

A 10 N object is in free fall. What is the magnitude of the net force which acts on the object?

A 30 N object is falling and experienced 10 N of air resistance. What is the magnitude of the net force which acts on the object?

A 30 N object is falling. What is the magnitude of the net force when it falls fast enough to encounter an air resistance of 30 N?

_____ says that work is equal to change in energy.

A student weighing 500 N climbs at constant speed to the top of an 5 m vertical rope in 10

s. The average power expended by the student to overcome gravity is

Stan does 300 J of work lifting himself 0.5 m. What is Stan’s mass?

The acceleration of gravity is 10 m/s².

CER format requires a minimum of ___ sentences.

The first sentence of a CER response should __.

It is most appropriate to introduce equations in the ___ section of a CER response.

In the ___ section of a CER response, you should explain your logic and restate the claim (answer).