A scooter acquires a velocity of 36 km/h in 10s just after the start. It takes 20s to stop. The
ratio of its acceleration and retardation is n. Find n.
Answers
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Answer:
∴a = 1 m/s²
Thus, acceleration of the scooter is 1 m/s²
Explanation:
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Given : A scooter acquires a velocity of 36 km/h in 10s just after the start. It takes 20s to stop.
The ratio of its acceleration and retardation is n.
To Find : n.
Solution:
velocity of 36 km/h
= 36 * 5/18 = 10 m/s
a = ( v - u)/t
or v = u + at
a = ( 10 - 0 )/10 = 1 m/s²
Retardation = ( 10 - 0)/20 = 1/2 m/s²
ratio of its acceleration and retardation = 1/(1/2) = 2
Hence n = 2
Value of n is 2
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