Question

(i) Write the three equations of uniformly accelerated motion. Give the meaning of each symbol which occurs in them.
(ii) A car acquires a velocity of 72 km per hour in 10 seconds starting from rest. Find
​ (a) the acceleration, (b) the average velocity, and (c) the distance travelled in this time.

Answer 1

Answer:

The speed-time graph of a car is given alongside. The car weighs 100 kg.

(i) What is the distance travelled by car in the first two seconds?

​(ii) What is the braking force applied at the end of 5 seconds to bring the car to a stop within one second?