Intext example IV — task. Science CBSE, Class 9.

PDF chapter test TRY NOW

Starting from a stationary position, Rahul paddles his bicycle to attain a velocity of \(6\ m\ s^{–1}\) in \(30\ s\). Then he applies brakes such that the velocity of the bicycle comes down to \(4\ m\ s^{-1}\) in the next \(5\ s\). Calculate the acceleration of the bicycle in both the cases.

The formula to calculate the acceleration,

\(acceleration\ =\ \frac{change\ in\ distance}{Time\ taken}\)
\(acceleration\ =\ {change\ in\ velocity} \times {Time\ taken}\)
\(acceleration\ =\ \frac{change\ in\ velocity}{Time\ taken}\)
\(acceleration\ =\ {change\ in\ distance} \times {Time\ taken}\)

The formula to calculate the acceleration,

\(a\ =\ {v} \times {t}\)
\(a\ =\ \frac{v\ -\ u}{t}\)
\(a\ =\ {v\ -\ u} \times {t}\)
\(a\ =\ {u} \times {t}\)

Acceleration of the bicycle in Case - \(1\) \(=\) \(m\ s^{-2}\)

Acceleration of the bicycle in Case - \(2\) \(=\) \(m\ s^{-2}\)

(Note: Enter your answer with 1 decimal digit)

Previous exercise

Exit to the topic

Next exercise

Send feedback

Did you find an error?

Send it to us!

14. Intext example IV

Exercise condition: