Elastic
Inelastic
Expensive
Exhaustive
The sum of their momentums after the collision is equal to the sum of their momentums before the collision
The momentum before the collision is always greater than the total momentum after the collision
The object with greater mass always has greater momentum
They both lose momentum at the moment of impact
Mass times velocity
Force times distance
Speed times acceleration
Time and space
Double the velocity of the object
Double the mass of the object
Double the potential energy
Double the temperature of the object
The person has more kinetic energy before they jump than after they jump.
The person has less potential energy at the top of the platform than in the air.
The person's potential energy at the instant they jump is approximately equal to their kinetic energy the instant they land.
The person's kinetic energy at the instant they jump is approximately double their potential energy the instant they land.
A hollow ring
A solid disk
A solid sphere
They are all equal
Sliding
Rolling
If friction doesn't slow it down, then they are the same
It depends on whether or not the object is hollow
A parabola
A half-circle
An irregular path since the object is not perfectly round
You can't tell unless you know how fast the object is spinning
The translational kinetic energy plus the rotational kinetic energy at the bottom of the hill
1/2 mv^2 at the bottom of the hill
It depends on the radius of the ball
Less than 1/2 mv^2 at the bottom of the hill
Moment of inertia
Rotational kinetic energy
Total kinetic energy of a moving object
Potential energy of rotation