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Worksheetswork and energy
Total questions: 10
Worksheet time: 36mins
work is done when
the object you apply a force on moves
any force is applied to an object, regardless if it moves or not
the force is zero
the force and direction of motion are perpendicular
The ability to do work is called
energy
force
power
machine
What is the unit of report for energy?
Joules
meters
newtons
grams
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.
You pick up a 3.8 kg can of paint from the ground and lift it to a height of 1.4 m. You hold the can stationary for half a minute, waiting for a friend on a ladder to take it. How much work do you do during this time (when the can of paint was stationary)?
52 J
30 J
0 J
25 J
A man pushes a boulder and the boulder does not move. Which statement correctly describes the scenario
work is being done by a single object
All work done is external to the system
by pushing on the rock, the man causes a transfer of energy
no work is being done on the object
Which two measurements must be parallel for work to be done
force and displacement
distance and direction
constant force and power
power and work
A man carries a box across a room at constant velocity. Is work being done on the box by the man?
Yes
No
Half of the time
Not enough information
A man lifts a box into the air. Is work being done by gravity when the box is lifted into the air?
Yes
No
Half of the time
Not enough information
