Triple Cumulative Revision

What is the formula to calculate Gravitational Potential Energy (GPE)?

Which of the following is a unit of power in electrical circuits?

• Joule

• Ohm

• Watt

• Ampere

What does the slope of a velocity-time graph represent?

• Distance

• Displacement

• Acceleration

• Speed

In a free body diagram, what does the length of the arrow generally represent?

• Direction of the force

• Type of force

• Magnitude of the force

• Point of application of the force

What is the formula for calculating efficiency of an energy transfer?

If a car accelerates from rest to 60 m/s in 5 seconds, what is its acceleration?

What is the resultant force on an object if it is in equilibrium?

• Equal to its weight

• Zero

• Constant but not zero

• Increasing over time

How does increasing the number of gears in a machine affect its output speed, assuming the input speed remains constant?

• Increases the output speed

• Decreases the output speed

• Does not affect the output speed

• Initially increases then decreases the output speed

• 98 N

• 9.8 N

• 100 N

• 10 N

What is the purpose of using gears in machines?

• To increase energy efficiency

• To change the direction of motion

• To increase the speed of motion

• Both B and C