Free Printable Work, Machines, Power

Worksheets

Work, Machines, Power

Total questions: 18

Worksheet time: 40mins

Name

Class

Date

units of force are

newtons

grams

joules

meters

units for work are

newtons

joules

meters

seconds

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

What is the formula for work?

Force = work x distance

Distance = force x work

Work = force x distance

Work = force x mass

Fred kicks a ball with a force of 20N to George, who is 5M away. How much work was done to the ball?

25J

100J

75J

Energy can not be created or destroyed, only converted from one form to another.

true

false

Force is a _____ or _______

simple complex

push pull

up down

in out

Which is doing work?

pushing a wall

holding a box

picking up a pencil

sitting in a chair

No machine can be 100% efficient because of

Thermal energy

Waste energy

Convection energy

Friction

10.

Which is not considered a simple machine?

The pump

The wheel & axle

The wedge

The screw

The pulley

11.

The efficiency of a machine can be increased by reducing __________________________.

effort

resistance friction

fulcrum

friction

12.

What are the 6 simple machines we discussed in class?

wheel, hammer, spiral, stump, spike, cube

pulley, lever, wheel and axle, screw, inclined plane, wedge

ramp, bolt, circuit, wheel, block, spiral

wheel and socket, ramp, cube, screw, lever, spiral

13.

An axe is an example of which simple machine?

Pulley

Wedge

Screw

Inclined plane

14.

The unit for Power

Watt

Joule

Newton

15.

What two things do you need to know to calculate work?

force and gravity

distance and mass

gravity and mass

force and distance

16.

The rate at which work is done is called ____________________ .

Power

Kinetic Energy

Potential Energy

Watts

17.

Name the type of machine that is described: something that uses a rope and can change the direction of a force.

Screw

Wheel and axle

Lever

Pulley

18.

The resistance to motion created by two objects rubbing against each other is called:

friction

inertia

gravity

static

Reset

Work, Machines, Power

Total questions: 18

Worksheet time: 40mins

Similar Resources on Wayground