WorksheetsWork Power Energy Final Review
Total questions: 26
Worksheet time: 25mins
If you walk up the stairs with the box, why is work being done?
Because the force and direction are both horizontal
Because the force is horizontal and the direction is vertical
Because the force and direction are unrelated
Because the force and direction are both vertical
What is a wedge based on?
A circular motion
An inclined plane
A lever system
A pulley system
What is energy defined as in the context of work?
The force applied on an object
The displacement of an object
The ability, capacity, or capability of a physical system to do work
The amount of work done by a force of 1 N acting through 1 m
What is the SI-derived unit used to measure energy, work, and quantity of heat?
Newton
Watt
Joule
Pascal
When does kinetic energy emerge?
During the dormant state of an object
When energy is being stored
During the active process of work
After work has been completed
What must occur for work to be done, as per the learning material?
A force must be applied without movement
Displacement must occur without force
A force must cause displacement
Movement must occur without force
How is work (W) calculated ?
W = F + d
W = F / d
W = F x d
W = F - d
How is the force applied to lift an object calculated?
The object's mass divided by gravity's pull.
The object's mass plus gravity's pull.
The object's mass multiplied by gravity's pull.
The object's velocity multiplied by gravity's pull.
What is the force required to lift a 1 kg object on Earth? g=9.8 m/s/s
1 N
9.8 N
19.6 N
0.98 N
Why is no work done on a satellite orbiting the Earth despite the gravitational force?
Because the satellite is not moving
Because the gravitational force acts in the same direction as the satellite's motion
Because the gravitational force from the Earth acts perpendicular to the direction of motion of the satellite
Because the satellite is outside the Earth's gravitational field
How is power calculated according to the formula given in the learning material?
Power is calculated by multiplying work with time.
Power is calculated by dividing work by time.
Power is calculated by adding work to time.
Power is calculated by subtracting work from time.
If you lift a 10 kg object 5 meters in 10 seconds, what is the power exerted?
5 watts
50 watts
10 watts
500 watts
Which formula represents the relationship between power (P), work (W), and time (t)?
P=W/t
P=W+t
P=W-t
P=W×t
Ty lifts a set of 1250kg weights a vertical distance of 2m in a weight lifting contest. What Potential Energy do the weights now possess?
12,789 Joules
24,500 Joules
4,500 Joules
Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level.
250,000 J
2,450,000 J
2,451,663 J
248 J
If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have? (KE = 1/2mv2)
5.4 J
1.8 J
3 J
6 J
Which is the Potential energy from least to the greatest on the stairs?
D, C, B, A
A, B, C, D
C, B, A D
D, A, B, C
At what point does the skateboarder have the most potential energy?
1
2
3
4
