Question

The velocity of a particle at an instant is 10 m/s. After 5 sec, the velocity of the particle is 20 m/s. Find the velocity at 3 seconds before from the instant when velocity of a particle is 10m/s.(a) 8 m/s (b) 4 m/s(c) 6 m/s(d) 7 m/s

Answer 1

use the formula sn= u+1/2a(2n-1)