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WorksheetsWork and Energy
Total questions: 16
Worksheet time: 2hrs 36mins
The ability to do work
Power
Energy
Force
Joule
Work equals force times
matter
weight
power
distance
One joule per second equals one
Newton-meter
Watt
meter
Newton
The amount of work done per unit of time is called
Energy
Force
Power
Watt
Potential Energy = Weight x ________________
length
distance
width
height
Then how much work is done if it takes 20N to move a box 10 meters
What is the S.I unit of work?
N.m2
(Kg.m2) / s2
J/m
J
The coefficient of kinetic friction between a large box and the floor is 0.21. A person pushes horizontally on the box with a force of 165 N for a distance of 2.8 m. If the mass of the box is 72 kg, what is the total work done on the box? (Round your answer to a whole number)
51
49
47
45
A 3 kg plate is tossed across the room with an acceleration of 13 m/s2 in 2.5 sec. Calculate the amount of power it took to toss the plate.
290.5 W
1267.5 W
507 W
3000 W
An object weighing 20 N moves horizontally toward the right a distance of 5.0 m. What is the work done on the object by the force of gravity?
The work done on the object by the force of gravity is 50 J.
The work done on the object by the force of gravity is zero joules.
The work done on the object by the force of gravity is 4.0 J.
The work done on the object by the force of gravity is 0.25 J.
The work done on the object by the force of gravity is 100 J.
You pick up a 3.8 kg can of paint from the ground and lift it to a height of 1.4 m. You hold the can stationary for half a minute, waiting for a friend on a ladder to take it. How much work do you do during this time (when the can of paint was stationary)?
52 J
30 J
0 J
25 J
You raise a bucket of water from the bottom of a well that is 12 m deep. The mass of the bucket and the water is 5.00 kg, and it takes 15 s to raise the bucket to the top of the well. How much power is required?
39 W
41 W
43 W
45 W
