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A car attains a velocity of 54 km/h (15 m/s) within 5 seconds from an initial velocity of 18 km/h (5m/s). Calculate its acceleration and displacement. |
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Answer» u = 5 m/s. t = 5s v = 15 m/s a = \(\frac{\text{v}\,-\,\text{u}}{t}=\frac{15-5}{5}=\frac{10}{5}\) = 2 m/s2 s = ut + 1/2 at2 = 5 × 5 + 1/2 × 2 × 52 = 25 + 25 = 50 m |
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