Physics Quiz on Motion, Heat, and Light - 22.02.2025

Duration: 1 hour 20 minutes
Instructions:

• Answer all questions.

• Multiple-choice questions (MCQs) are worth 1 mark each.

• Short answer questions are worth 2-3 marks each.

• Show all working for calculations.

For drawing questions, use a separate sheet if necessary

A car accelerates uniformly from rest at 3 m/s² for 5 seconds. What is its final velocity?

• 15 m/s

• 10 m/s

• 5 m/s

• 20 m/s

The area under a velocity-time graph represents:

• Acceleration

• Velocity

• Distance traveled

• Time elapsed

A ball is thrown vertically upwards at 20 m/s. What is its velocity at the highest point?

• 10 m/s

• 0 m/s

• 20 m/s

• -20 m/s

If a body is in free fall, which of the following remains constant?

• Acceleration

• Velocity

• Displacement

• Momentum

What is the SI unit of acceleration?

• m/s

• m/s²

• km/h²

• N/kg

A train moves with a uniform acceleration of 2 m/s² from rest. How far does it travel in 8 seconds? (Show working.)

A ball is dropped from a height of 20 m. How long does it take to reach the ground? Assume g = 10 m/s².

Define velocity, acceleration, and displacement with examples.

A car moving at 30 m/s applies brakes and comes to rest in 5 seconds. Find the acceleration.