Question

A force of 10 N changes the velocity of a body from 5 msal to 10 ms' in
10 seconds. How much force is required to bring about the same change in
5 seconds.​

Answer 1

Answer:

a = v-u /t

   = 10 m/s - 5 m/s / 10s

   = 0.5 m/s²

F = ma

10 N = 0.5 m/s².m

   m = 10 kg.m/s² / 0.5 m/s²

       = 20 kg

force is required to bring about the same change in  5 seconds

F = ma

    = m × [v-u/t]

    = 20 kg × [ 10 m/s - 5m/s / 5s ]

    = 20 kg × 1 m/s²

    = 20 N