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WorksheetsForces and Energy
Total questions: 20
Worksheet time: 7mins
What is the equation for kinetic energy?
KE = 1/2 v x m^2
KE = m x v^2
KE = 1/2 m x v^2
KE = 1/2 m x v
What is the formula for potential energy?
PE = m x g
PE = m x g x h
PE = m x h
PE = m x v
What is the potential energy of an 8 kg cat sitting on top of a 3 meter hill?
24 J
36 J
235.2 J
1. What is the potential energy of a 20 kg rock resting on the top of a 6 meter building?
120 J
1176 J
360 J
Why is potential energy the greatest at the top of a hill?
Potential energy depends on a resting object's speed and the top of the hill will always be the smoothest
Potential energy depends on a resting object's height, so the higher the object, the greater the potential energy
Potential energy depends on a resting object's ability to roll and it has the most room to roll at the top of a hill
Potential energy is stored energy.
Which of these is a good example of stored energy?
The glow from a snapped glowstick. (Light energy)
A lit match. (Thermal energy)
A battery. (Chemical energy)
What is the Kinetic energy of an 8 kg cat sitting on top of a 3 meter hill?
235.2 J
24 J
36 J
What is the Kinetic energy of a 10 kg rock resting on the top of a 4 meter building?
80 J
40 J
392 J
Why is kinetic energy the greatest at the bottom of a skate ramp?
Kinetic energy depends on the object's speed and ability to move. The lower the object is, the faster it can move.
Kinetic Energy is actually the greatest at the top of the ramp because it depends on the object's height.
The bottom of the ramp is ALWAYS the smoothest.
What is a good example of Kinetic Energy?
A battery (chemical energy)
A runner winning a race.
A match-box.
Finish this formula:
Force =
momentum x acceleration
mass x acceleration
mass x velocity
What is the force of a 4 kg toy car accelerating at 10 m/s^2?
200 N
40 N
40 J
What is the force of a 1 kg paper boat accelerating across a pond at 2 m/s^2?
3 J
2 J
2 N
Which of Newton’s Laws explains why you might push really hard on a heavy grocery cart?
1st
2nd
3rd
If I step on my car’s brakes, am I changing the car’s mass or acceleration?
Neither
Acceleration
Mass
Which word explains why my blender blade will still spin right after I turn off my blender?
Acceleration
Inertia
Gravity
Which would be easier to stop: a car loaded with watermelons or a car loaded with sunflower seeds?
Watermelons
Sunflower seeds
They would stop at the same time.
Which Newton’s Law is this: If you push down on a button, the button pushes up on you?
1st
2nd
3rd
4th
What’s the main difference between inertia and momentum?
Momentum deals with how hard it is to change movement. Inertia deals with how hard it is to stop movement.
Inertia deals with how hard it is to change movement. Momentum deals with how hard it is to stop movement.
They mean the same thing.
Which Newton’s Law is this: nothing moves until something causes it to move?
1st
2nd
3rd
4th
