Forces

Forces can be explained as......

• Up and downs

• Ins and outs

• Pushes and pulls

• Backwards and forwards

An object with a mass of 400g will have what weight?

• 5 Newtons

• 4 Newtons

• 40 Newtons

• 500 Newtons

A falling apple, like in the picture, is an example of which pulling force?

• magnetism

• mass

• gravity

• upthrust

Complete the statement - The rougher the surface, the.......

• greater the friction

• less friction

• the same level of friction

• decrease in friction

Describe the direction of air resistance on an object.

• the opposite direction to movement

• the same direction as movement

How can you reduce air resistance on an object?

• Streamlining

• Make it smaller

• Make it lighter

• Make it wider

A simple machine, such as a pulley, makes 'work' easier. How?

• By reducing the force needed to move a mass.

• By helping to move a mass faster.

• By reducing the force of gravity.

• By increasing the force needed to move a mass.

How could you increase the amount of air resistance on a falling parachute?

• Make the ropes longer.

• Make the parachute smaller.

• Make the parachute larger.

• Make the object fall faster.

A hammer, a wheelbarrow and scissors are all examples of which type of simple machine?

• Lever

• Ramp

• Inclined plane

• Gears

What will happen to a stationary (not moving) object if the forces on it are balanced?

• It will start moving

• It will speed up

• It will slow down

• It will stay stationary.