F.4 Physics Final Exam Revision

What does work done measure?

• The speed of an object

• Energy transfer due to a force

• The mass of an object

• The time taken to move

What does the conservation of energy state?

• Energy can be created

• Energy can be destroyed

• Energy changes from one form to another

• Energy stays the same in one form

What is power a measure of?

• The rate of doing work

• The force applied

• The distance moved

• The energy stored

What is momentum a measure of?

• The force on an object

• The quantity of motion

• The energy of motion

• The acceleration of an object

When is total momentum conserved in a system?

• When external forces act

• When no external forces act

• When objects are stationary

• When internal forces are zero

What does the formula p = m v represent?

• Work done

• Momentum

• Power

• Energy

At what angle is the range of a projectile maximum when launched and landed at the same level?

• 30°

• 45°

• 60°

• 90°

What is true about a projectile’s path when it lands at the same level as launched?

• It is a straight line

• It is symmetric

• It is circular

• It is irregular

What happens to a projectile’s range if its initial speed increases?

• It decreases

• It stays the same

• It increases

• It becomes zero

In uniform circular motion, where does the centripetal force always point to?

• Away from the center

• Towards the center

• Along the path

• Opposite the motion