G7 Force and motion

Which force produces a change in motion?

• balanced force

• unbalanced force

• gravitational force

• frictional force

Which force works against motion?

• friction

• gravity

• moving

• elastic spring

The tug of war game is an example ______ forces.

• balanced

• net zero

• potential

• unbalanced

Which is the unit to measure force?

• Force

• Joules

• Newtons

• Kilogram

Which of the following examples correctly describe a non-contact force?

• A moving ball is slowing down

• Using an eraser to erase the words

• Computer keys bounce back as you type

• A durian fruit fell to the ground

Which of the statements about force is incorrect?

• A force can change the mass of an object.

• A force can change the shape and size of an object.

• A force can stop a moving object.

• A force can change the direction of a moving object.

Calculate the resultant force on the box and the direction it will move.

Calculate the resultant force on the box and the direction it will move.

An apple has a mass of 100 g. Calculate its weight on Earth (g = 10 N/kg).

The weight of James is 560 N on Earth (10 N/kg). What is his mass?