Question

An object moving with a velocity of 20 m/s stops in in 5 sec then the retardation of the object is……​

Answer 1

Answer:

20/205+57-355--6@*/$*

Answer 2

V(t)=Vo+at

V(t) final velocity; Vo initial velocity;

a acceleration; t time

Vo=20 m/sec

t=5 sec

V(t)=0

Hence 0=20+5a

Solving for a we get:

a=-4 m/sec^2