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Starting from a stationary position, Rahul paddles his bicycle to attain a velocity of 6 m/s in 30 s. Then , he applies breaks such that the velocity of the bicycle comes down to 4m/s in the next 5 s. Calculate the acceleration of the bicycle in both the cases. |
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Answer» ↗ For first case :▪ Initial VELOCITY = zero (i.e. rest)▪ Final velocity after = 6mps▪ Time interval = 30s↗ For second case :▪ Initial velocity = 6mps▪ Final velocity = 4mps▪ Time interval = 5sTo Find :▪ Acceleration of BICYCLE in both the cases.Concept :✏ Acceleration is defined as the RATE of change in velocity. (wrt time)✏ It is a vector quantity.✏ It can be positive/negative/zero.✏ It has both magnitude as well as direction.✏ SI unit : m/s²Calculation :↗ First case :↗ Second case :[Note : Negative SIGN shows retardation.] |
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