The position of a particle is given by s=2t^3-40t^2+200t-50, where s is in meters and t is in seconds. Plot the pos, vel, and acc, as a function of time for the first 12 sec of motion. Determine the time at which the vel. Is 0.

is cut off abruptly at this point, compute the impact velocity of the landing gear with the moon. Lunar

downward velocity of 2m/s. If the descent engine engine to within h=5m of the surface where it has a module descends under retrothrust of its descent In the final stages of a moon landing, the lunar

Approx. the vel. Of the particle at t=4s and t=8s. as recorded by the oscilloscope record shown. with a velocity of 100 m/s and gives it a deceleration A retarding force acts on a particle moving initially

The pos. vector of a point which moves in the x-y plane is given by r=(2/3t^3-3/2t^2)i+(t^4/12)j where r is in meters and t is in sec. Determine the angle b/n the vel v and the acc. A when (a)t=2s and (b)t=3s.