A puck of mass 0.50 kg slides on a frictionless horizontal surface
PHYSICS · Multi-part · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A puck of mass 0.50 kg slides on a frictionless horizontal surface. At t=0 it moves due east at 4.0 m/s. Beginning at t=0, a constant net horizontal force of 3.0 N east and 4.0 N north acts on the puck for 2.0 s. After t=2.0s the net force on the puck is negligible.
(a) Determine the vector impulse delivered to the puck during the 2.0 s interval.
(b) Calculate the puck’s momentum vector immediately after the force ceases.
(c) Find the magnitude and compass direction of the puck’s velocity at t=2.0s.
(d) Compute the puck’s kinetic energy before and after the force is applied, and determine the percent increase in kinetic energy.