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WorksheetsJC Science_Physics - Forces
Total questions: 16
Worksheet time: 20mins
Define force
push or pull force
force of gravity
something that changes or tries to change the motion of an object
What instrument is used to measure a force needed to move an object?
Einstein meter
Newton meter (also called spring balance)
Boyle meter
Watson meter
Define friction
Slows things down
Needs oil
Force because of sandpaper
Force that opposes motion
Give two advantages of friction
Ability to walk
See objects clearly
Brakes to slow down an object when required
Carry sound waves
Give two disadvantages of friction
Heat up our hands
Wears down engine parts
Limits top speeds
Turns objects grey
What is Hooke's Law?
The extension of a spiral spring is directly proportional to the force applied.
The rate of change of a body's momentum is proportional to the force and takes place in the direction of the force.
To every action there is an equal but opposite reaction.
The rate of change of velocity.
Methods of reducing friction?
Use oil (lubrication)
Streamlining used in car design to reduce air resistance
Ball bearings between the axle and the wheel
All of the above
Who discovered gravity?
Alexander Graham Bell
Leonardo Di Vinci
Isaac Newton
Rosalind Franklin
What instrument is used to measure the mass of an object?
Barometer
Weighing scales
(Electronic / pan top) balance
Pipette
If the mass of a book is 3 Kg. What does it weigh?
3 Kg
30 N
3 N
30 Kg
Using 'g' as 10 m/s/s, calculate the weight of a 100g apple?
0.1 N
1 N
100 N
10 N
What force is required to give a car of mass 1000 Kg an acceleration of 2 m/s/s?
2000 N
500 N
2 N
998 N
A force of 100 N is placed on a shopping trolley of mass 20 Kg. What will be the acceleration of the trolley?
20 m/s/s
5 m/s/s
2000 m/s/s
None of the above
Who discovered that two different masses accelerate at the same rate if dropped from a height in a vacuum to remove air resistance.
Botticelli
Newton
Galileo
Di Vincenzo
What term is defined as:
a measure of the force of gravity on an object ?
mass
volume
gravity
weight
Hooke's Law - yes, another question on the definition!
The extension of a spiral spring is ...
inversely proportional to the applied force
directly proportional to the applied force
