Question

a racing car (at rest) accelerates uniformly from the starting grid on the race track and reaches a top velocity of 300 m/s after 5 seconds. For the next 4 seconds the acceleration is 0m/s^2 and finally the car accelerates (brakes) at 4m/s^2 for 5 seconds.
draw a velocity-time graph
ANSWER THE FOLLOWING QUESTIONS
(a) what distance does the car travel in the first 5 seconds?
(b) what is the velocity of the car after 7 seconds?
(c) what is the velocity of the car after 14 seconds
(d) what is the acceleration in the first 5 seconds?

Answer 1

(a)300x5=1500

so the car travelled 1500m

Answer 2

Answer:

a) 1500 m or 1.5 Km

b) 300 m/s

c) 100 m/s

d) 60 m/s