Which of the following statements is true?

To increase power, you can increase the amount of work you do in a given amount of time, or you can do a given amount of work in less time.

To increase power, you can decrease the amount of work you do in a given amount of time, or you can do a given amount of work in less time.

To increase power, you can decrease the amount of work you do in a given amount of time, or you can do a given amount of work in more time.

To increase power, you can increase the amount of work you do in a given amount of time, or you can do a given amount of work in more time.

A block starts at rest at point P at the top of a ramp which is height h above the ground. The block slides down one side and up the other, stopping at a point less than h above the ground.

The block did not go as high on the other side because work from friction made the mechanical energy less.

The block did not go as high on the other side because gravity pulls down.

The block did not go as high on the other side because potential energy always has to decrease.

The situation as described is impossible to happen.

Where is the roller coaster gaining potential energy?

The roller coaster is always losing potential energy

What effect do external forces like an applied force, friction force, or drag force have?

They convert between mechanical energy and other forms of energy to change the total mechanical energy of the system.

They have no effect on a system's mechanical energy.

They convert kinetic energy into potential energy.

They convert potential energy into kinetic energy.

Which of these items is not part of the law of conservation of energy?

energy is destroyed by friction

energy can be transferred between forms

Resource Library

Science

Physics

Work, Power, And Energy

Chapter 14/15 Work, Power, And Energy

Chapter 14/15 Work, Power, and Energy

Authored by Joe Jahnz

Science

9th - 10th Grade

NGSS covered

Used 103+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two factors that determine work are

size of the force, and distance

size of the force, and type of force

mass, and distance

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

work is a measurement of how much force is applied over a certain

distance

velocity

shape

size

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

units of force are

netwons

grams

joules

meters

MULTIPLE CHOICE QUESTION

1 min • 1 pt

units for work are

netwons

joules

meters

seconds

MULTIPLE CHOICE QUESTION

1 min • 1 pt

if you push a cart with a force of 60 N for 2 m... how much work have you done

120 J

30 J

120 N

30 N

MULTIPLE CHOICE QUESTION

1 min • 1 pt

work transfers

sweat

energy

velocity

effort

energy in motion

kinetic

potential

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Chapter 14/15 Work, Power, and Energy

Two factors that determine work are

work is a measurement of how much force is applied over a certain

units of force are

units for work are

if you push a cart with a force of 60 N for 2 m... how much work have you done

work transfers

energy in motion

stored energy

both work and energy are measured in

potential energy is mass (x) acceleration due to gravity (x) ?

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