WorksheetsWork and energy
Total questions: 7
Worksheet time: 33mins
A box is pushed by 20 N force to the right and displace for 0.1 m. What is the work done?
0.005 J
0.1 J
1 J
2 J
What is the formula of work?
W = F / d
W = F + d
W = F x d
W = F - d
A car has speed 5 m/s and the mass of the car 1000 kg. What is the kinetic energy of the car?
12500 J
25000 J
5000 J
2500 J
Which of the following variable is not affect the potential energy?
height from ground
gravitational acceleration
mass
temperature
Potential energy of a feather is 2 J. The mass of the feather is 50 gram. What is the height of feather above the ground? (
g=10 s2m )4 cm
40 cm
400 cm
4 km
In which scenario is work = 0 J ?
Pushing a stationary wall
Pulling a trolley car
Pushing a book across the table
Dropping a set of keys from a height, h.
If the net work done on an object is positive, what can you conclude about the object's motion?
The object is speeding up.
The object is moving with a constant velocity.
The object is slowing down.
The object is at rest; its position is constant.
