# Selina Solutions Class 9 Physics Solutions for Exercise 2A in Chapter 2 - Chapter 2 Motion In One Dimension

Question 45 Exercise 2A

A bicycle initially moving with a velocity 5m/s accelerates for 5s at a rate of 2 m/s^2 . What will be its final velocity?

Given: u = 5m/s, t=5s, a= 2 m/s^2. V=?

\begin{array}{c} \text { Acceleration }=\frac{v-u}{t} \\ 2=\frac{v-5}{5} \\ 10=v-5 \\ v=15 \mathrm{m} / \mathrm{s} \end{array}

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