Question

For a body starting from rest,the displacement in 10 second, when it acquires 4 m/s in 2 seconds is:

Answer 1

Answer:

100m

Explanation:

given⇒

initial velocity(u)=0

displacement(S)=say x

time(t)=t

final velocity(v)=4

as all these quantities are in SI system we can just write numerical values without units.

first lets find acceleration lets take acceleration as a and other quantities with the symbols mentioned above formula of acceleration is a=v-u/t=4-0/2 which is equal to 2.so the acceleration of the body is 2 m/s².now the formula of displacement is S=ut+1/2×at²=0+1/2×2×10² which when simplified gives 100m.

HOPE IT HELPS YOU