Work and Energy Pre-Test

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Email *

First Name *

Last Name *

Teacher *

Period *

1st

2nd

3rd

6th

A force does work when it *

moves an object some distance

pushes against an object that doesn't move

acts over a specific length of time'

acts in one direction

Which unit is used to measure work? *

joule

newton

pascal

watt

Matt pulls a suitcase across the floor with the handle up at an angle. Which statement is true? *

All of Matt's force does work on the suitcase

only the part of Matt's force in the direction the suitcase moves does work.

Only the part of Matt's force directed upward does work

None of Matt's force does work on the suitcase

To find the total mechanical energy of an object, you can *

multiply the potential energy by the kinetic energy

add the potential energy and the kinetic energy

divide the kinetic energy by the potential energy

divide the potential energy by the kinetic energy

When a force does work, it *

does not affect energy

always increases total energy

transfers energy

can only decrease potential energy

When friction acts on a surface, the surface becomes warmer. This example shows energy being *

permanently lost from a system

changed from one form to another

increased over time

converted into power

A force of 60 N does 360 J of work by moving an object 6 m across the floor. If the same amount of work is done over a distance of 12 m, how much force is doing the work? *

30 N

60 N

120 N

180 N

Which type of energy uses photovoltaic cells which capture energy from the sun and convert it to other forms of useful energy? *

Nuclear

Solar

Chemical

Mechanical

Which of these has the most potential energy? *

a book on a table

a rubber band sitting in your hand

a boulder on the edge of a cliff

a car traveling at 40 mph

Which type of energy is released during the fission or fusion of atoms and then converted to electricity? *

nuclear

solar

chemical

mechanical

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