Calculate the acceleration — task. Science CBSE, Class 9.

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Starting from a stationary position, Raja paddles his bicycle to attain a velocity of 4 $m$ $/$ $s$ in 45 $s$ . Then he applies brakes such that the velocity of the bicycle comes down to 3 $m$ $/$ $s$ in the next 5 $s$ . Calculate the acceleration of the bicycle in both the cases.

1. Acceleration (before applying brake)

$=$

$m . s^{- 2}$

2. Acceleration (after applying brake)

$=$

$m . s^{- 2}$

Important!

Note: Enter your answer with 2 decimal digits.

$1$

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19. Calculate the acceleration

Exercise condition: