Question

(i) Derive the expression for the displacement in the nth second of a body moving with uniform acceleration (ii) A body moving with uniform acceleration moves 27.5 m and 39.5 min the 8th and 12th second of its motion. Find its initial velocity and acceleration

Answer 1

Answer:

v=u+at−−−−−−−(1) v = u + a t − − − − − − − ( 1 ) . This is the velocity-time relation. Similarly the displacement at the instant t is given by, s=ut+12at2−−−−−(2) s = u t + 1 2 a t 2 − − − − − ( 2 ) .