Question

II. Answer the followiny.
1. A car accelerates uniformly from 18 km/h to 36 km/h in 5 s. Calculate the acceleration and
the distance covered by the car. (2m)
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Answer 1

Answer:

Expert Answer:

Initial speed = u = 18 km/hr = 5 m/s

Final sped = v = 36 km/hr = 10 m/s

acceleration a = (v-u)/t = (10-5)/5 = 1 m/s2

Distance travelled S = u t + (1/2) a t2 = 5×5 + (1/2)×1×52 = 37.5 m

Answered by Thiyagarajan K | 31st Jul, 2019,

Answer 2

Answer with explanation:

Initial speed = u = 18 km/hr = 5 m/s

Final sped = v = 36 km/hr = 10 m/s

acceleration a = (v-u)/t = (10-5)/5 = 1 m/s2

Distance travelled S = u t + (1/2) a t2 = 5×5 + (1/2)×1×52 = 37.5 m