A ball is rolling down a hill at +1.0 m/s. the ball is uniformly acceleration +4.9 m/s^2. what will the ball's velocity be 4.0 s later?
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a=4.9 m/s²
=>v-u/t = 4.9 m/s²
=>v-u = 4×4.9 m/s
=>v = 19.6 - 1 m/s
=>v = 18.6 m/s
=>v-u/t = 4.9 m/s²
=>v-u = 4×4.9 m/s
=>v = 19.6 - 1 m/s
=>v = 18.6 m/s
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