Question

A car starting from rest attains a velocity of 20 m/s in 10 sec. then brakes are applied, such that the velocity of the car comes down to 10 m/s in next 5 sec calculate the Acceleration of car in both the cases​

Answer 1

Explanation:

Area under the v-t curve (in this case it is a triangle) is same as displacement.

$\frac{1}{2}vt = 100 = v = \frac{200}{t} = 10 \: m \:$

Answer 2

Answer:

the acceleration in both the cases of the car is 120km per hour