During takeoff, a rocket goes from at of elevation to at of elevation.

Estimate the amount of work done by the rocket engine. Neglect any mass change due to burning of fuel.

A blue rubber ball weighing is rolling with a velocity of when it hits a still red rubber ball with a weight of . After this elastic collision, what are the speeds and directions of the blue and red balls respectively?

A large block is sitting on the floor. The block is . You pull the block with a rope, applying of force at a 25 degree angle with respect to the horizon. How much work did you do on the block if you moved it ? The block moves at a constant speed while you are pulling it.

The work done by a centripetal force on an object moving in a circle at constant speed is __________.

The height at the top of the hill is

If the velocity of the train at the top of the loop is , how high is the highest point of the loop?

A rocket is in space at location when it fires it's thrusters. The thrusters provide a force of . The thusters are turned off at location .

What is the work done on the rocket by the thrusters?

Determine the work done by nonconservative forces if an object with mass 10kg is shot up in the air at returns to the same height with speed .

Nicola is attempting to create a single tiered mobile as shown. She has a wooden dowel (, ), and two distinct bird ornaments (, ) which she wishes to attach on either end of the dowel.

If Nicola places ornament , to the left of the dowel's midpoint, and ornament , to the right of the dowel's midpoint, where should she attach the mobile string in order for it to balance?

Note: figure not drawn to scale.

A object is moving along with the velocity given below. Calculate the magnitude of the momentum vector .

Two asteroids in space are in close proximity to each other. Each has a mass of . If they are apart, what is the gravitational force between them?