Worksheets7.1-7.2
Total questions: 25
Worksheet time: 56mins
what is the product of force and displacement?
work
power
energy
what is the unit of work?
Newton
Joule
Watt
meter
True or false
You do work when you mannequin pose with an object in your hand.
true
false
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
Two people shove on a wall with 100 N. The wall doesn’t move. How much work is done?
100J
100N
0J
0N
what is the product of force and displacement?
work
power
energy
Ahmed is out with his friends. Misfortune occurs and Ahmed and his friends find themselves getting a workout. They apply a cumulative force of 1000 N to push the car 200 m out of the sand. Determine the work done on the car.
2 x 105 J
2.70 x 104 J
3.2 x 10-4 J
3.54 x 105 J
If Jay Loppy pushes his van 20 meters how much work is done?
2,000J
40,000J
10,000J
800,000J
It is the ability of an object to perform work.
Energy
Force
Power
Which of the following situations shows that WORK is done on an object?
How much work is done on an object if the amount of force applied is 50 N and the object was displaced by 2 meters from its original position?
100 J
25 J
100 W
25 W
The highest inhabited town in the world has an elevation of 5334 m above sea level. What would be the gravitational potential energy of a 64 kg person in this town?
341,376 J
83.3 J
3,345,484.8 J
34,834.3 J
What is the gravitational potential energy of an 85 kg mountain climber at the summit of a 6267 m volcano?
5,220,411 J
532,695 J
73.7 J
54,356.6 J
An Olympic high jumper, with a mass of 82 kg, has a maximum gravitational potential energy of 1970 J. How high was the jump?
24 m
161,540 m
2.5 m
201 m
The world record for pole vaulting is 6.15 m. I the pole vaulter’s gravitational potential energy is 4942 J, what is his mass?
803.6 kg
504.3 kg
30,393.3 kg
82 kg
One of the tallest radio towers is in Fargo, North Dakota. The tower is 629 m tall. If a bird lands on top of the tower, so that the gravitational potential energy associated with the bird is 2033 J, what is its mass?
1,278,757 kg
12,531,819 kg
3.25 kg
0.330 kg
0.309 kg
An automobile to be transported by ship is raised 7.0 m above the dock. If its gravitational potential energy is 66,000 J, what is the automobile’s mass?
4,527,600 kg
462,000 kg
962.1 kg
9428.6 kg
On a distant planet, the GPE of a 65 kg astronaut is 11,115 J when they are on a 45 m tall cliff. What is the acceleration due to gravity on this planet?
16,055 m/s2
0.26 m/s2
3.8 m/s2
9.8 m/s2
Calculate the force that changes the spring length by 0.25m, when the spring's spring constant is 350Nm-1.
1400 N
14000 N
7.14 x 10-4 N
87.5 N
A force 480 N of that changes the spring length by 0.25 m, calculate the spring constant.
120 N
1920 N
2000 N
20 N
A force of 157 N acts on a spring with a spring constant of 350 Nm-1. Calculate the length the spring changed.
540 m
45 m
54950 m
0.45 m
Leo (70 Kg) stretches the trampoline mat by 37 cm. Calculate the elastic potential energy he puts into the trampoline mat.
4.79 J
126.9 J
47.9 J
12.76. J
