Write displacement time equation of motion . answer
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State the givens and the unknown. Use the first equation of motion — the one where velocity is a function of time.
v0 = 25 m/s
a = −2.0 m/s2
∆t = 3.0 s
v = ?
v = v0 + at
v = (25 m/s) + (−2.0 m/s2)(3.0 s)
v = 19 m/s
Restate the givens and the unknown from the previous part, since they're all still valid. Use the second equation of motion — the one where displacement is a function of time.
v0 = 25 m/s
a = −2.0 m/s2
∆t = 3.0 s
∆s = ?
∆s = v0t + ½at2
∆s = (25 m/s)(3.0 s) + ½(−2.0 m/s2)(3.0 s)2
∆s = 66 m
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