Forces - Test Revision

What is the name of the unit to measure force?

• Neutrons

• Newtons

• Neptune

• Kilograms

Forces allow objects to start moving and to stop moving

• TRUE

• FALSE

If you were to push against a solid statue with 30 N of force, with how much force will the statue push back with?

• 300 N

• 60 N

• 15 N

• 30 N

Which of the following statements about UNBALANCED FORCES is INCORRECT?

• Unbalanced forces always cause a change in motion

• Unbalanced forces are not equal

• Unbalanced forces are equal

• Unbalanced forces are not opposite

In the above image "the Mystery Machine", are the forces BALANCED or UNBALANCED?

Contact forces must touch an object before they can make something happen.

Non-contact forces can act from a distance, they don’t need to touch the object to have an effect.

Select the forces which are NON-CONTACT FORCES from the list below.

• Friction

• Gravity

• Tension (pull)

• Air resistance

• Magnetic force

Look at the image above. Choose the statements that best describes the forces being applied.

• The trolley on the left requires more force to push it?

• The trolley on the right requires a greater force to push it

• The trolley on the right requires more force because it is heavier

• both trolleys are being pushed with the same force

Oil and grease are lubricants that reduce friction between moving parts by making the surfaces smoother.

• TRUE

• FALSE

This plane is accelerating forwards at an awesome speed!

What is the total NET force that is accelerating the plane forward?

Two teams are competing in a tug-of-war contest. Team A is pulling at 4000N and Team B is pulling at 4900N is the opposite direction. Which team is winning?