Asked by wendlen
A hockey puck is hit on a frozen lake and starts moving with a speed of 13.80 m/s. Exactly 6.7 s later, its speed is 7.10 m/s.
a) what is the puck's average acceleration?
b) what is the coefficient of kinetic friction between the puck and the ice?
a) what is the puck's average acceleration?
b) what is the coefficient of kinetic friction between the puck and the ice?
Answers
Answered by
bobpursley
acceleration=changevelocity/time
forcefriction=mass*a you know a, and mass
force friction=mu*mg
mu*g=a
solve for mu.
forcefriction=mass*a you know a, and mass
force friction=mu*mg
mu*g=a
solve for mu.
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