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WorksheetsPhysics 8th: Understanding Forces and Motion
Total questions: 10
Worksheet time: 5mins
What is the difference between mass and weight?
Weight is a measure of matter; mass is the force of gravity on that weight.
Mass is a measure of matter; weight is the force of gravity on that mass.
Mass and weight are the same and can be used interchangeably.
Mass is the weight of an object; weight is its mass in kilograms.
Define balanced forces and give an example.
Balanced forces are equal in size and opposite in direction, like a book on a table.
Balanced forces are unequal in size and direction, like a car accelerating.
Balanced forces are only present when an object is in motion, like a runner on a track.
Balanced forces cause an object to move in one direction, like a ball rolling downhill.
What happens to an object when unbalanced forces act on it?
The object experiences no change in motion.
The object moves in a circular path at constant speed.
The object remains at rest regardless of the forces.
The object accelerates in the direction of the net force.
How does gravity affect weight?
Gravity only affects the shape of objects.
Gravity affects weight by determining the gravitational force acting on an object, making weight dependent on the strength of gravity.
Weight is constant regardless of gravity.
Gravity has no effect on weight.
If two forces of 10 N act in opposite directions, what is the net force?
0 N
10 N
20 N
5 N
What is the unit of measurement for mass?
kilogram (kg)
liter (L)
meter (m)
joule (J)
Explain how friction is a force that can be balanced or unbalanced.
Friction is a type of energy that cannot oppose any force.
Friction can be balanced when it opposes an equal force, and unbalanced when it exceeds the opposing force.
Friction only acts in one direction and cannot be balanced.
Friction is always unbalanced regardless of the forces involved.
What is the formula to calculate weight?
Weight = Mass - gravitational acceleration
Weight = Mass + gravitational acceleration
Weight = Mass ÷ gravitational acceleration
Weight = Mass × gravitational acceleration
If mass of an object is 66kg, calculate it's mass on the Earth.
630N
67N
660 kg
660 N
Give an example of a situation with unbalanced forces in everyday life.
A car moving at a constant speed on a highway.
A person standing still in a room.
A book resting on a table.
A person pushing a shopping cart.
