Question

A car moving with 54 km/h velocity is suddenly brought to a stop in 2s. Find

(i) its acceleration

(ii) distance travelled by it in 10s if its motion was uniform

plz answer ​

Answer 1

Answer:

-7.5 $m/s^{2}$

Explanation:

Given:

u = 54 km/h = 54 x 5/18 = 15 m/s

v = 0 m/s

t= 2 seconds

To find - 1) acceleration  

Solutions -

v = u + at

0 = 15 + a x 2

-15 = a x 2

-15/2 = a

a = -7.5 m/$s^{2}$