WorksheetsWork & Power
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which of these is a measurement of power?
a)
100 joules
b)
100 watts
c)
100 meters per second
d)
100 hertz
2.
Which of the following is true about work?
a)
It measures how quickly an object accelerates
b)
It measures how much effort is applied over a distance.
c)
It measures the change of an object's rate of speed.
d)
It measures how much time it takes to move an object.
3.
When is positive work done?
a)
When an object moves in the same direction as its force.
b)
When an object moves in the opposite direction as its force.
c)
When a force causes the object to move more quickly.
d)
When an object stops moving.
4.
What units do we use to measure work?
a)
watts
b)
newtons
c)
joules
d)
meters
5.
A kid throws a ball with a force of 70N over 1.1 meters. How much work did he do?
a)
77 joules
b)
70 joules
c)
7.7 joules
d)
11 joules
6.
How do you know when a force has been applied to an object?
a)
It moves.
b)
It flies.
c)
It accelerates.
d)
It gets bigger.
7.
What is the equation for calculating power?
a)
distance / time
b)
work x time
c)
work / time
d)
force x distance
8.
In which of these cases is work being done?
a)
A student sleeps all night.
b)
A student pushes a locked door that does not move.
c)
A student carries his chair into another room.
d)
A student sits on the carpet.
9.
A 500N block is lifted 10 m. How much work was done?
a)
5000 J
b)
500 J
c)
50 J
d)
5 J
10.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
100 %
