Physical Science Work, Power and Energy Lesson

Presentation

•

Physics

•

9th - 12th Grade

•

Medium

•

NGSS

HS-PS2-1, MS-PS3-2, HS-PS3-2

Standards-aligned

Susan Schroer

Used 13+ times

FREE Resource

5 Slides • 8 Questions

Energy possessed by an object due to its position or Configuration.

P.E.= mgh or P.E.= ½kx²

Potential Energy

Energy possessed by an object due to its motion.

K.E.= ½mv²

Kinetic Energy

Mechanical Energy

M.E.= K.E.+P.E. Unit of Energy is J

" Energy can neither be created nor be destroyed, can only be changed from one form to another . "

Energy

Work

Multiple Choice

Potential or kinetic?
Stretched bow and arrow?

kinetic

potential

Multiple Choice

How does conservation of energy explain why something that is falling should speed up?

It gains kinetic energy because it gains potential energy.

It loses kinetic energy because no work was done on it.

It gains kinetic energy because it loses potential energy.

It loses kinetic energy because the Earth gains potential energy.

Work is also...

Multiple Select

Select all: Work is equal to...

KE + PE

Change in energy

Multiple Choice

What is the unit of measurement for work?

meters

newtons

m/s

Joules

Multiple Choice

The unit used to measure power is the

Watt

Newton

Joule

Newton*meter

Multiple Choice

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

Work of 2000 J is required to push an object 1.5 km. What is the force?

2.5 N

1.3 N

1.6 N

12 N

Multiple Choice

This weight lifter required 1029.7 newtons of force to bring the weights to a height of approximately 2.31 m in 9 seconds. How much power did he have?

264 Watts

1029 Watts

2,377 Watts

4,009 Watts

Energy possessed by an object due to its position or Configuration.

P.E.= mgh or P.E.= ½kx²

Potential Energy

Energy possessed by an object due to its motion.

K.E.= ½mv²

Kinetic Energy

Mechanical Energy

M.E.= K.E.+P.E. Unit of Energy is J

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