Question

A car is moving with uniform velocity of 72 kmph for 15s on a national highway .It's acceralation and the distance travelled are.

Answer 1

Howdy!!

your answer is -----

Given,

→ velocity = 72kmph Or 20m/s

and → time t = 15s

since, velocity is uniform

so , its acceleration is zero because there is no charge in velocity and we know that change in velocity is called acceleration and there is no change hence, acceleration is zero

in mathematically ---

for uniform velocity

initial velocity u = 72kmph and final velocity v is also = 72kmph

now, a = v-u/t

=> a = 20-20/15

=> a = 0/15

=> a = 0

now, distance(s) is --

s = ut+1/2at^2

=> s = 20×15+1/2×0×15×15

=> s = 20×15

=> s = 300meter

hence, acceleration a = 0 and
distance s = 300kilometer

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hope it help you