Question

2! A cyclist is moving at a uniform speed of 20 ms
for 30 s. He then stops paddling and stops in next
10 s. Calculate the
(a) average retardation.
[Ans.-2 ms)
total distance travelled.
(Ans. 700 m​

Answer 1

Answer:

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Answer 2

Explanation:

uniform speed 20m/s for 30 sec.

Distance s¹= speed × time = 20 × 30 = 600 m

retardation a = u by t = 20 by 10 = 2 m/s²

distance s² = u × t - ½ × a × t²= 20 × 10 - ½ × 2 × 10 × 10 = 100 m

total distance = s¹ + s² = 600 + 100 = 700