Question

A vehicle is moving on a straight road with a speed 15m/s comes to rest in 3s. Find the deceleration.

A) 10/3 m/s2 B) 15/3 m/s2

C) 20/3 m/s2

D) 25/3 m/s2​

Answer 1

Answer:

15/3 m/s2

Explanation:

v = u + at

where v is the final velocity

u is the initial velocity

a acceleration

t the time taken

here v= 0,u=15 , t=3

so solving we get a= -15/3

negative sign for deceleration