Question

A car of mass 1000 kg is moving with a velocity of 20 m/s. The driver applies the brakes, and the car comes to rest in 10 seconds. Find the average force exerted by the brakes to stop the car.

• A. \( 2000 \, \text{N} \)
• B. \( 5000 \, \text{N} \)
• C. \( 10000 \, \text{N} \)
• D. \( 4000 \, \text{N} \)

Hint:

When calculating force, always remember to account for the direction of acceleration. A negative acceleration means a decelerating force that acts in the opposite direction of motion.