Question

A particle starts from rest and attains a velocity of 40 metre per second in 4 seconds what is the acceleration​

Answer 1

Answer:

1 St equation of motion

v = u +at

u = 0

v = 40m/s

t = 4

a = v/t

a = 40/4 = 10m/s^2

Answer 2

Explanation:

Equation of motion:

$v = u \: + at$

u = 0 as particle starts from rest

v = 40

t = 4

40 = 0 + a×4

a = 40/4

a = 10 m/s^2