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  • Someone was cruising along the left side of the

    Someone was cruising along the left side of the
    hockey rink at a certain initial speed.He then suddenly accelerated for 0.8 s and reached
    9.5 m/s speed to catch a pass from a teammate.If the acceleration was at a rate of 6.5
    m/s2,
    (a) What was his initial speed?
    (b) How long was the distance he accelerated?
    英語人氣:874 ℃時間:2020-06-20 23:24:04
    優(yōu)質(zhì)解答
    answer:
    a) initial speed = 4.3m/s (solution:v = 9.5 - 6.5 * 0.8)
    b) distance = 5.52m (solution:d = (4.3 + 9.5)/2 * 0.8)
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