SOLVING FOR POTENTIAL AND KINETIC ENERGY

SOLVING FOR POTENTIAL AND KINETIC ENERGY

(Problem Solving)

DIRECTIONS

• Watch the video below on energy and its types.

• Answer the questions provided in the worksheet below.

Multiple Choice

Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.

• 18 J

• 36 J

• 12 J

• 6 J

Multiple Choice

A cheetah can run briefly with a speed of 31.0 m/s. Suppose a cheetah with a mass of 47.0 kg runs at this speed. What is the cheetah’s kinetic energy?

• 1457 Joules

• 22,584 Joules

• 15 Joules

• 45,167Joules

Multiple Choice

A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?

• 43982.4 J

• 63982.3 J

• 43962.4 J

• 83942.4 J

Multiple Choice

A 2600 kilogram car is moving at a speed of 25 m/s. How much kinetic energy does the car have?

• 427,500 J

• 237,500 J

• 437,500 J

• 537,500 J

Multiple Choice

A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?

• 3.2 J

• 4.2 J

• 2.0 J

• 12.8 J

Multiple Choice

A 50kg (100lb) person is running at 7m/s (about 16 mph). How much kinetic energy do they have?

• 1225 J

• 180000 J

• 294 J

• 3920000 J

Multiple Choice

What is the kinetic energy of a 1,600kg Mustang travelling at 15 m/s (33mph)

• 180000 J

• 294 J

• 1225 J

• 3920000 J

Multiple Choice

A 6kg cat misjudges a jump and falls 5 meters. How much gravitational potential energy does the cat have? (The cat is fine by the way.)

• 294 J

• 180000 J

• 1225 J

• 3920000 J

Multiple Choice

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs?

• 8.5 J

• 45 J

• 7.5 J

• 22.5 J

Multiple Choice

How much gravitational potential energy does a 100kg (220lb.) skydiver have if they jump from 4000 meters?

• 3920000 J

• 294 J

• 180000 J

• 1225 J

Multiple Choice

Where would this tossed baseball have the least amount of kinetic energy?

• point W

• point X

• point y

• point z

Multiple Choice

What would have the greatest kinetic energy?

• A car driving down a hill.
• A person running down a hill. 
• A ball rolling down a hill. 

Multiple Choice

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball?

• 567 J

• 900 J

• 945 J

• 30 J

Multiple Choice

Gravitational potential energy depends on the ________ and ________ of the object.

• Height and mass

• Friction and movement

• Mass and Movement

• Height and Friction

Multiple Choice

The faster an object moves, the ________ kinetic energy it has.

• more

• less

• none of the above

• all of the above

Multiple Choice

Energy due to motion is ____________ energy.

• Potential

• Energy

• Kinetic

• Friction

Multiple Choice

At which point is potential energy greatest?

• W

• X

• Y

• Z

Multiple Choice

A slingshot that has been pulled back but has not been let go

• Potential Energy

• Kinetic Energy

Multiple Choice

A satellite that is orbiting the Earth at nearly 40,000 kph

• Potential Energy

• Kinetic Energy

Multiple Choice

A cliff diver is just about to jump off an 18 m high cliff

• Potential Energy

• Kinetic Energy

Multiple Choice

A girl is swinging and she is at the highest point of the swing

• Potential Energy

• Kinetic Energy

Multiple Choice

A grasshopper reaches the highest point in its jump from one plant to another

• Potential Energy

• Kinetic Energy

Multiple Choice

A bobsled is moving at its greatest speed around the final turn.

• Potential Energy

• Kinetic Energy

Multiple Choice

A baseball has reached its highest point after being hit towards the top of the stadium.

• Kinetic Energy

• Potential Energy