In professional hockey, a slapshot is a type of shot in which a player literally
ID: 1322702 • Letter: I
Question
In professional hockey, a slapshot is a type of shot in which a player literally "slaps" the puck with his stick. The puck may start with a very low speed and can leave the stick with a speed as high as 46 m/s (104 mi/h). A hockey puck has a mass of about 0.15 kg. Hint: For approximately what distance is the stick in contact with the puck? Estimate the distance the stick is in contact with the puck.
_________m
Assuming the puck starts from rest, what is the average force exerted by the hockey stick on the puck? (Use your estimate.)
________N
Explanation / Answer
Estimate the distance the stick is in contact with the puck.
let the time for which the hockey stick is in contact with eith puke is T= 1s, therefore
v = u + at
a = 46 / 1
v^2 = u^2 + 2*46*s
46^2 = 0 + 2*46*s
s = 23 m
Estimate the distance the stick is in contact with the puck.
a = 46 m/s^2
Force = m * a = 0.15*46 N = 6.9 N
note: time duration of contact is not given in question so the question is being solved using T = 1 s