A hockey puck slides across ice with an initial speed of and comes to rest after traveling
PHYSICS · Multi-part · CBSE · Physics · Motion in a Straight Line · Motion in a Straight Line
Problem
A 1.2kg hockey puck slides across ice with an initial speed of 12ms−1 and comes to rest after traveling 18m. Assume the kinetic friction force acting on the puck is constant while it slows and that no other horizontal forces act.
(a) Determine the magnitude of the puck’s acceleration while it is slowing.
(b) Calculate the time required for the puck to come to rest.
(c) Find the magnitude of the impulse delivered to the puck by the friction force during the entire slowing interval.
(d) Discuss the direction of this impulse relative to the puck’s initial momentum.