This is the formula for gravitational potential energy.
What is PEg = m * g * h?
100
This is the SI unit for momentum and impulse.
What is kg*m/s? (Or N*s)
100
For a force to do work, the object the force is exerted on must be ________.
What is moving (in the same direction as the force)?
100
These three energies make up mechanical energy.
What are gravitational potential, spring potential, and kinetic energies?
200
This is the kinetic energy of an object at rest.
What is 0? (Or no energy)
200
This is the potential energy of a 30 kg box resting on top of a 250 cm bookshelf.
What is 735.75 J?
200
Momentum is always ___________ in all types of collisions.
What is conserved?
200
This is the amount of work done when a 7.5 N package is lifted UP 6 m.
What is 45 J?
200
These two concepts have the same SI units.
What are energy and work? (or what are impulse and momentum?)
300
This is the kinetic energy of a 50.0 kg toy car with a velocity of 2 m/s.
What is 100 J?
300
As the ________ and ______ of an object gets larger, the gravitational potential energy of that object gets larger.
What are mass and height?
300
Object A has a mass of 6 kg. Object B has a mass of 2 kg. If both objects have the same velocity, Object A's momentum is _________ Object B. (greater than/less than/equal to)
What is greater than?
300
This is the amount of work done when a horizontal force of 25 N is exerted on an object that is moving vertically 10 m.
What is no work?
300
A pendulum is swinging back and forth (disregard external forces). It has a potential energy of 25 J at its highest point. This is its kinetic energy at its lowest point.
What is 25 J?
400
A 25 kg snowball is resting at the top of a 20 m hill. It suddenly rolls down the magically frictionless hill. This is the velocity of the snowball as it reaches the bottom of the hill.
What is 19.81 m/s?
400
An object at rest has an initial gravitational potential energy of 800 J at a height of 20 m. It then free-falls (disregard air resistance). This is its new gravitational potential energy at 5 m.
What is 200 J?
400
This is the impulse experienced by a 6 kg object encountering a force of 2 N that changes its velocity by 4 m/s.
What is 24 kg*m/s?
400
This is the MASS of an object if 20 J of work is done to lift it up 2 m.
What is 1.02 kg?
400
Object A has a velocity of 6 m/s. Object B has a velocity of 2 m/s. If both objects have the same mass, Object A's kinetic energy is _________ Object B. (Give value times greater than/less than/equal to)
What is 9 times greater?
500
A 25 kg snowball is resting at the top of a 20 m hill. It suddenly rolls down the hill, losing 905 J of energy due to friction. This is the velocity of the snowball as it reaches the bottom of the hill.
What is 17.89 m/s?
500
A 200 kg snowball has reached the bottom of a hill going 25 m/s and is about to go up a second magically frictionless hill. This is the highest this snowball can go up the hill.
What is 31.86 m?
500
A 45 kg ice skater is holding a 3 kg medicine ball, standing in the frictionless rink. She throws the ball straight in front of her with a velocity of 5 m/s. This is her final velocity.
What is -0.33 m/s?
500
A little girl is pulling on a sled with a force of 30 N directed 60° above the horizontal. She pulls it for a distance of 5 m before she gets tired and stops. This is the amount of work she has done.
What is 75 J?
500
The time of impact in a collision is decreased by 4. If the impulse stays constant, then this is how much the force of impact is altered.