WorksheetsDaily Spark Unit 3 Review 2 20-21
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
2.
A man pushes a car with a force of 20N. He pushes it 5m. How much work is done?
a)
4J
b)
100J
c)
50J
d)
150J
3.
When Izzy and Zoe pull on the rope with the same amount of force, the forces are _____.
a)
increased
b)
unbalanced
c)
balanced
d)
decreased
4.
Why did Izzy fall when playing tug of war?
a)
he tripped
b)
unbalanced forces
c)
balanced forces
d)
he was pushed
5.
The unit of power is the...
a)
work
b)
watt
6.
Work is done on an object when the object moves in the SAME direction in which the force is applied.
a)
True
b)
False
7.
A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball?
a)
77 J
b)
7.7 J
c)
0.7 J
d)
770 J
8.
Two workers use 100 N of force to move a sofa 2 meters in 2 seconds. How much power is required?
a)
100 watts
b)
400 watts
c)
104 watts
d)
50 watts
9.
Constants should be...
a)
different
b)
same
c)
kind of the same
d)
none of the above
10.
This variable in an experiment is the one being deliberately changed by the scientist.
a)
dependent variable
b)
independent variable
c)
data
d)
control group
100 %
