Question

Find the velocity of a body when it had travelled 4m if initially it was at rest. (a=x^2) Here a=acceleration and x=displacement

Answer 1

Answer:

Explanation:

ACCELERATION, A= X² [ WHERE X IS THE DISPLACEMENT]

INTEGRATING ACCELERATION WE GET VELOCITY

V = 2 X

VELOCITY AT 4 M ,

V= 2*4

V= 8 M/S.

HOPE THIS HELPS.

Answer 2

Answer:

21 integer 1/3 m / unit of time

Explanation:

integrating w r t x

v=( 1/3) x³ +c

at t= 0 , v= 0 , x= 0 => c = 0

=> v = (1/3)x³

since x = 4m

=> v = (1/3) × 4³= 64/3= 21 integer 1/3 m/ unit