The position of an elevator varies with time according to the function x(t)=t2+2t+3
Find the (1) average velocity between time interval t=0 s to t=2 s. (2) instantaneous velocity of the elevator at time t=3 s.
A particle from ground with speed 80m/s at an angle 30∘ with horizontal from ground. The magnitude of average velocity of particle in time interval t=2s to t=6s is [ Take g = 10m/s2]