Question

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Starting from rest Rahul paddles his bicycle to acquire a velocity of 6m/s in 30 second. Then he applies brakes such that speed of bicycle become 4m/s in next 5 second. Calculate acceleration in both cases and total distance travelled .

Answer 1

Answer:

First case: +0.2. Second case: -0.4

Step-by-step explanation:

First case:

Initial velocity = 0m/s

Final velocity = 6m/s

Acceleration = final velocity - initial velocity/ time

Acceleration = 6 - 0 / 30

Acceleration = 6/30 = 0.2m

Second case:

Initial velocity = 6m/s

Final velocity = 4m/s

Acceleration = final velocity - initial velocity/ time

Acceleration = 4 - 6/ 5

Acceleration = -2/5= -0.4