Question

a car moving with a velocity of 54 km hr is accelerated so that its velocity becomes 72km/hr in 15sec. calculate the acceleration of the car

Answer 1

We calculate acceleration with the formula, a=$\frac{v-u}{t}$. So subsitute the values in the formula, so it's $\frac{72-54}{15}$. We need to multiply it by $\frac{60}{1}$ because the speed is 15 second and we need to convert it to hour. 72-54 is 18 and multiplied by 60 is 1080. Then divide it by 15 which is 72 km/hr. Your answer will be 72 km/hr :).

Hope it helped!