Homework Help: physics

Posted by Anonymous on Thursday, October 4, 2012 at 11:29pm.

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 - Anonymous, Thursday, October 4, 2012 at 11:41pm
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.
(c) How far does the puck travel during the time interval?
physics - Elena, Friday, October 5, 2012 at 2:38pm
v=v₀+at
a= (v-v₀)/t
s= v₀t-at²/2

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