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- A car accelerates at a rate of \( 5 \mathrm{~m} \mathrm{~s}^{-2} \). Find the increase in its velocity in \( 2 \mathrm{~s} \).
- A car is moving with a velocity \( 20 \mathrm{~m} \mathrm{~s}^{-1} \). The brakes are applied to retard it at a rate of \( 2 \mathrm{~m} \mathrm{~s}^{-2} \). What will be the velocity after \( 5 \mathrm{~s} \) of applying the brakes ?
- A bicycle initially moving with a velocity \( 5.0 \mathrm{~m} \mathrm{~s}^{-1} \) accelerates for \( 5 \mathrm{~s} \) at a rate of \( 2 \mathrm{~m} \mathrm{~s}^{-2} \). What will be its final velocity?
- A car is moving in a straight line with speed \( 18 \mathrm{~km} \mathrm{~h}^{-1} \). It is stopped in \( 5 \mathrm{~s} \) by applying the brakes. Find : (i) the speed of car in \( \mathrm{ms}^{-1} \), (ii) the retardation and (iii)the speed of car after 2 s of applying the brakes.
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