Question

A car move with a speed of 30km/hr and suddenly applied a brake a reduce its speed 25km/hr in 2 sec . find its acceleration​

Answer 1

Answer:

7.63m/s²

Explanation:

Given:-

• u= 30km/h = 8.33m/s
• v= 25km/h = 6.94m/s
• t= 2 s

To find:-

• a= ?

Solution:-

a=(v+u)/t

= (8.33+6.94)/2

= 15.27/2

=7.63 m/s²

we put minus sign for negetive acceleration.

so, answer is 7.63 m/s²