Force and Motion

What happens when an object is at rest/stationary?

• Forces act on it but they are balanced.

• One force acts on it, gravity

• No forces act on it.

Which of these is false?

• A moving object keeps moving until a force stops it.

• A moving object travels in a line until a force changes its direction.

• A moving object eventually runs out of force and slows down.

Which of these is not a force?

• Friction

• Height

• Weight

Which would give the smallest force meter reading?

• They would both give the same reading.

• A toy car suspended in air.

• A toy car suspended in water.

Gravity acts towards the centre of the Earth. Why don’t we get pulled to the centre of the Earth?

• Because gravity runs out.

• The pavement exerts an equal force in the opposite direction.

• Because gravity only acts through air.

Which statement is true?

• Gravity does not act on airplanes flying in the sky.

• Gravity only acts through the air, not through land or water.

• Gravity always acts towards the centre of the Earth.

You would feel heaviest …

• On Earth.

• You would feel the same on both.

• On the Moon.

Weight is a force. What is weight measured in?

• Meters

• Kilograms

• Newtons

When an object falls, what does air resistance do?

• Acts in the opposite direction to the movement.

• Doesn’t act at all.

• Acts in the same direction as the weight.

Freddie is stood still holding a cricket bat on the cricket pitch. A ball is coming towards him. Which two forces are balanced?

• Air resistance on the ball and gravity.

• His weight and a force reaction from the ground.

• The force of his pitchers throw of the ball and air resistance.