Work is measured in ________ and power is measured in _________.

• newtons, watts

• watts, joules

• joules, newtons

• joules, watts

How much work is done when an object weighing 6N is lifted 5m?

• 5J

• 30J

• 6J

• 300J

For work to be done

• no motion has to take place

• power must be achieved

• motion must occur in the direction of the exerted force

• any motion must occur

A horse performed 170 Joules of work pulling a cart of wood 10m. How much force did the horse exert?

• .6N

• 10N

• 17N

• There is not enough information given

An example of work being done would be which of the following?

• a weightlifter lifting a barbell over her head

• a book resting on a table

• a person holding a basketball

• a dog sleeping on the floor

How much work is done when a 100 N force moves a block 59 m?

• 1.7J

• 590J

• 5900J

• .59J

Tags

NGSS.MS-PS3-5

Which is more work, pushing with 115 N over 15 m or lifting 200 N 10 m?

• 115 N over 15 m

• 200 N over 10 m

• They are the same amount of work

How far will 350 J raise a block weighing 7 N?

• 2450N

• 50N

• 2450m

• 50m

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

You carry a 20 N bag of dog food up a 6 m flight of stairs.  How much work did you do?

• 3.3J

• 120J

• .3J

• 1200J

Tags

NGSS.MS-PS2-4

Suppose a force of 200 N is used to push an object a distance of 14 m in 18 s. Find the power of the situation.

• 155.6w

• 155.6J

• 11.1w

• 11.1J