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WorksheetsP7 - Work Review
Total questions: 20
Worksheet time: 24mins
What is the unit used to measure work?
Joules (J)
kilograms (kg)
Newtons (N)
meters per second2 (m/s2)
What is the unit for Force?
Joules (J)
kilograms (kg)
Newtons (N)
meters per second2 (m/s2)
What is considered to be a push or a pull?
work
weight
force
acceleration
Finish the formula:
Work = Force x ____
mass
weight
distance
acceleration
Which of these measures work?
100 N
100 m/s
100 J
100 W
What is the force exerted over a distance to move an object called?
work
weight
force
acceleration
Which of the following is the best example of work being done?
Doing homework
Lifting a box
Pushing a stationary wall
Holding a box
In which of these cases is work being done?
A student sleeps
A student pushes a locked door that does not move
A student pushes his chair into another room
A student carries his homework assignment to the teacher
True or False: The farther you move an object, the more work you do.
True
False
True or False: When the distance an object moves is zero the work done on the object is also zero.
True
False
A 5,000 N block is lifted 10 m. How much work was done?
50,000 J
500 J
0.002 J
0 J (no work)
A soccer player kicks a 5 kg ball over 1.4 meters with an acceleration of 13 m/s2. How much work did the player do on the ball?
91 J
46.43 J
7 J
0 J (no work)
How far does a car that weighs 5001 N travel if 18000 J of work is done on it?
3.6 m
0.28 m
90,018,000 m
0 J (no work)
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
0 J (no work)
5 J
45 J
0.2 J
If a group of workers can move a crate 20 meters with 20,000 Joules of work. How much force must have been exerted on the crate?
1,000 N
0.001 N
400,000 N
0 J (no work)
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
20 m
0.059 m
272 m
0 J (no work)
What is the energy (work) done in lifting a 52.0 kg barbell 4.8 m above the floor?
2450 J
250 J
10.8 J
0 J (no work)
A weightlifter lifts two 30 kg weights 1.5 meters off the ground. How much work has he done?
882 J
441 J
45 J
0 J (no work)
On her way off to college, Maggie drags her suitcase 15.0 m from the door of her house with a horizontal force of 95.0 N. How much work does Maggie do to overcome the force of friction on her suitcase?
1425 J
6.33 J
0.16 J
0 J (no work)
From the previous question, with Maggie and her suitcase: If the floor has just been waxed, does she have to do more work or less work to move the suitcase?
more work because of more friction
more work because of less friction
less work because of more friction
less work because of less friction
