The unit of momentum.

The definition of impulse.

A rolling ball has 18 J of kinetic energy and is rolling 3 m/s. find its mass.

The definition of Energy.

2 conserved quantities.

The three types of collisions.

A box is pushed for 4 seconds with a force of 30 Newtons. What is the impulse on the box?

The K.E. for a 500 g wooden block moving at 2 m/s

A 65kg person jumps off a 10m diving board into a pool bellow. Neglecting friction, how much work has been done by the force of gravitation?

The minimum number of variables required to calculate both momentum and energy for a rollercoaster going down a hill.

A 67kg-clown is riding his 11-kg unicycle down the side of the main circus tent. At the bottom of the tent is a middle aged accountant terrified of clowns. Frozen with fear the man does not move and the clown crashes into him with a speed of 10m/s. With what momentum did the clown strike the man?

It is often believed that only a civilization capable of producing massive forces would be able to alter the path of a celestial object. However this is not necessarily true. Describe how a civilization as primitive as ours might be able to alter the path of a dense near indestructible meteor on a collision course for Wisconsin. How can we save the cheese!?

Consider a swinging pendulum. When pulled back the pendulum gains a height of 1.2m. How fast will the pendulum be traveling at the bottom of its arc? Neglect air resistance.

Three students are pushing a 900kg car with a combined constant force of 500 Newtons over a distance of 30.0meters for 10.0 seconds. What was the power exerted?

A 70.0kg object is traveling with 300 kgm/s of momentum. What is the object’s kinetic energy?

A 45.0g bullet is fired at 560.m/s through a 5.00kg block. The block has a 4.0m/s velocity after the collision. What would be the velocity of the bullet after the encounter?

The Hulk tosses a rock at iron man with a speed of 30.0m/s. Iron man initially at rest is struck by and carried away by the 200.kg rock. If iron man has a mass of 150kg what will their combined speed be after the collision?

A rollercoaster has a maximum peak of 55 m where the carts pause and a minimum valley of 3 m. The carts maximum weight limit is 3000kg. What is the top speed the cart can reach?

A group of 6 students develops 3.4hp of power in while pushing their car for 30. seconds. Each student exerts an average of 60. N force on the car. How far did the group push the car?

A 3kg lawn gnome falls off a 5m ledge. Neglecting air resistance, what will be the gnomes momentum just before hitting the ground?

A 3.0 kg object traveling 6.0 m/s east has a perfectly elastic collision with a 4.0 kg object traveling 8.0 m/s west. After the collision, the 3.0 kg object will travel 10. m/s west. What velocity will the 4.0 kg object have after the collision?

Two sumo wrestlers are in a match. At the start of the match, they both lunge at each other. They hit and miraculously come to a stand still. One wrestler was 200kg and traveling at a velocity of 2.3m/s at the instance of collision. If the other wrestler was traveling at 2.9m/s, what is his mass?

A 82g tennis ball is dropped out of a 10.0m window. After bouncing it raises only 7.5m. (a) Find the work done by nonconservative forces. (b) with what velocity did the ball leave the ground? Neglect air resistance.

Evan has a mass of 70.0kg. He hikes a hillside with a length of 300m at an inclination of 20 degrees. What is Evan’s work done against the force of gravity?

A 20,000.kg train car is traveling to the right with a speed of 10.m/s. It collides with, and locks with, a second 20,000kg train initially at rest. Will the kinetic energy be conserved? (Show work)