Answer to Question #26501 in Physics for shuumbwa joseph

Question

1.Below is the description of gthe position in metres of the puck as it moves in the x plane where time is in seconds ,
X=t^3+2t^2+t
(a)How long did the puck move after 2 seconds?
(b)What is the velocity of the puck at 2 seconds?
(c)What is the acceleration of the puck at 2 seconds?

2.An object moves in a uniform circural motion with centripetal acceleration of 25 m/s^2 ,if the diameter of the circle is 70m,
(a)Find the velocity at which the object is moving.
(b)Find the revolution period of the motion.