physics

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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.
    (c) How far does the puck travel during the time interval?

  • physics -

    v=v₀+at
    a= (v-v₀)/t
    s= v₀t-at²/2

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