Work/Energy/Power Quiz

What states that energy can never be created or destroyed?

• law of conservation of momentum
• law of conservation of energy
• law of conservation of matter
• law of conservation of water

Which energy transformation below matches what happens when water moves over a dam?

• kinetic to gravitational

• gravitational to kinetic

• solar to electrical

• electric to mechanical

What kind of Energy Does the Elephant have relative to the ground?

• Work

• Kinetic energy

• Gravitational Potential energy

• Elastic Potential energy

Gravitational Potential Energy (like that in an apple hanging on a tree) can be converted into Kinetic Energy.

• True
• False

A bike rider approaches a hill at a speed of 5.5 m/s. The combined mass of the bike and rider is 87kg. Find the initial kinetic energy of the system.

• 1316J

• 2316J

• 1457J

• none of the above

If both of these balls are traveling down a bowling lane at the SAME velocity, which one would would have more kinetic energy?  
Ball A = 500kg     B = 100kg

• Ball A because it has more mass.

• Ball B because it has less mass

• Both have the same Kinetic Energy because they have the same velocity.

• You can't compare their Kinetic Energy because there is not enough information given.

What is being transferred as you do work?

• Energy
• Heat
• Power
• Gravitational Potential Energy

How much work is being done by a constant 200 N force applied over 426 meters?

• 85,200 J

• 45,620 J

• 90,480 J

• 62,329 J

The SI unit of work is?

• Joules
• Watts
• Newtons
• meters

Tags

NGSS.HS-PS2-1

The energy of movement is...? 

• Kinetic
• Potential
• Elastic