A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds. The mass of the car is:
a) 1250 kilograms
b) 2500 kilograms
c) 5000 kilograms
d) 10,000 kilograms
Ans:
The mass of the car is 2500 kilograms.