WorksheetsForce, Work Power and Pressure
Total questions: 39
Worksheet time: 40mins
A force is:
Anything that causes the motion of an object to change
Used to measure the mass of an object
Describes the rapid motion of an object
Something Jedi knights use
Which of the following would be evidence for a force acting on an object (select all that apply):
An apple that is sitting on a table falls to the floor
A ball that is rolling very fast hits a wall and bounces back towards the kicker
A sponge is squashed to wring out the water it has absorbed
A car turns around a corner without changing speed
The correct unit for a force is:
kg
m/s
N
F
what force is pulling the apple down?
gravitational force
tension
normal reaction
what is the force shown in the picture?
magnetic force
electric force
applied force
Weight is _________.
the quantity of matter in an object.
the measure of an object's inertia.
the force exerted by gravity on an object's mass.
equal to the mass of an object.
Weight is constant. (Is it the same everywhere in the universe)
True
False
Mass is constant for a given object. (Is it the same everywhere in the universe)
True
False
What is the weight of an object that has a mass of 100kg?
10N
1000N
100N
None of these
An object has a weight of 60N on Earth, what is its mass?
The answer cannot be found with this information
0.6kg
600kg
6kg
An object has a weight on the moon of 9.6N, what is the object's mass? (Hint: gravity on the moon has a value of 1.6 m/s2)
9.6kg
6kg
15.4kg
Jupiter has a much bigger mass than the Earth. Which of the planets has a higher force of gravity?
Earth
Jupiter
Which statement BEST describes this graph?
The extension of a spring is directly proportional to the force applied to it
A spring will extend when a weight is added to it
Different springs can extend by different amounts when the same weight is added
This hurts less than being hit in the face with a brick because:
Wayne Rooney doesn't like bricks but loves soccer balls
A soccer bar is more elastic than a brick
Bricks have higher force than a soccer ball
Soccer balls travel slower than bricks
In science, a moment describes:
A period of time
The turning effect of a force
A system of forces acting in the same direction
Multiple weights acting on the same object
A nut can be loosened more easily with
a short spanner because a larger turning effect can be produced.
a long spanner because a larger turning effect can be produced.
a long spanner because a larger force can be produced.
a short spanner because a larger force can be produced.
What is the anticlockwise moment acting on this crane?
80,000Nm
100,000Nm
120,000Nm
140,000Nm
Two people are sitting on a seesaw. They take their legs off the ground and the seesaw stays perfectly balanced, not moving. What does this mean?
The people are sitting on opposite sides of the seesaw. Their moments are equal.
The people are sitting on opposite sides of the seesaw. Their moments are unequal.
The people are sitting on the same side of the seesaw. Their moments are equal.
The people are sitting on the same side of the seesaw. Their moments are unequal.
A match is lit and put in a bottle as shown. The egg moves inside the bottle. Why has this happened?
The pressure inside the bottle was lower than the pressure outside
The pressure inside the bottle increased
The egg was heated and therefore slid inside the bottle
None of these
Which of the following is the best example of work being done.
doing homework
lifting a box
pushing a stationary box
holding a box
You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?
Yes, work was done
No, work wasn't done
The correct unit for work is:
Joule (J)
Watt (W)
Newton (N)
Pascal (Pa)
A person lifts a package weighing 75 N. If she lifts it 1.2 m off the floor, what work has she done?
90 J
62.5 J
6.25 J
900 J
When 142 J of work is done in pushing a box horizontally 13.3 m, how much force is applied?
10.7 W
18,886 N
10.7 N
1,888.6 N
If you increase your work and decrease your time, you will produce
more power
less power
same amount of power
a power rating that can not be determined
Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has produced the greater amount of power.
Person A
Person B
