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

PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo

A constant force acts on an object of mass \(5\) \(kg\) for a duration of \(2\) \(s\). It increases the object’s velocity from \(3\) \(m\ s^{-1}\) to \(7\) \(m\ s^{-1}\). Find the magnitude of the applied force. Now, if the force was applied for a duration of \(5\) \(s\). (Enter the values up to two decimal)

What would be the final velocity of the object?

From the Newton's second law, We know that,

\(F\ =\ \frac{m}{a}\)
\(F\ =\ m \times a\)

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

\(v\ =\ u\ +\ {Fm} \times {t}\)
\(v\ =\ u\ +\ \frac{Ft}{m}\)

Final velocity \(=\) \(m\ s^{-1}\)

Previous exercise

Exit to the topic

Next exercise

Send feedback

Did you find an error?

Send it to us!

23. Intext example I

Exercise condition: