physics
posted by savannah .
A hockey puck is hit on a frozen lake and starts moving with a speed of 10.6 m/s. Five seconds later, its speed is 6.10 m/s.
(a) What is its average acceleration?
m/s2
(b) What is the average value of the coefficient of kinetic friction between puck and ice?
(c) How far does the puck travel during this 5.00 s interval?
m

a. a = (Vf  Vo) / t,
a = (6.1  10.6) / 5 = 0.9m/s^2.
c. d = (Vf^2  Vo^2) / 2a,
d = ((6.1)^2  (10.6)^2) / 1.8 = 41.8m.
Respond to this Question
Similar Questions

Physics
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? 
Physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 12.0 m/s. Five seconds later, its speed is 6.00 m/s. (a) What is its average acceleration? 
physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 12.3 m/s. Five seconds later, its speed is 6.60 m/s. (a) What is its average acceleration? 
physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 14.4 m/s. 3.0 seconds later, its speed is 7.3 m/s. (a) What is its average acceleration? 
physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 14.4 m/s. 3.0 seconds later, its speed is 7.3 m/s. (b) What is the average value of the coefficient of kinetic friction between puck and ice? 
Physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 13.80 m/s. Exactly 5.1 s later, its speed is 7.80 m/s. (a) What is the puck's average acceleration? 
physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 14.0 m/s. Five seconds later, its speed is 5.50 m/s. (a) What is its average acceleration? 
physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 14.0 m/s. Five seconds later, its speed is 5.50 m/s. (a) What is its average acceleration? 
physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 14.0 m/s. Five seconds later, its speed is 5.50 m/s. (a) What is its average acceleration? 
Physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 12.1 m/s. Four seconds later, its speed is 6.7 m/s. What is its average acceleration?