Question

a cheetah is the fastest land animal in the world. it can accelarate from rest to 20 m s-1 in 2s and has top speed of about

Answer 1

since it is at rest in the beginning therefore u=0 v= 20m/s  t=2sec  v= u+ at 20= a.2 a=10m/s^2  v at any time t will be given by  v= 10t   You are asking top speed that doesn't make much sense i think i gave you a relation with v and t   v increases as t increases