Question

A boy who is riding his bicycle, moves with an initial velocity of 5 m/s. ten second later, he is moving at 15 m/s. what is his acceleration

Answer 1

$\Large {{ \sf {Question :}}}$

A boy who is riding his bicycle, moves with an initial velocity of 5 m/s. Ten second later, he is moving at 15 m/s. What is his acceleration?

$\Large {{ \sf {Given :}}}$

Initial Velocity (u) - 5 m/s

Final Velocity (v) - 15 m/s

Time (t) - 10 sec

$\Large {{ \sf {Formulae :}}}$

If the velocity of an object changes from an initial value u to the final value v in time t, the acceleration a is,

$a \: = \frac{v - u}{t}$

$\Large {{ \sf {Step-by-step explanation :}}}$

$a \: = \frac{v - u}{t} \\ or \: \: a = \frac{(15 - 5)}{10} m \: s^{ - 2} \\ or \: \: a \: = \frac{10}{10}m \: s^{ - 2} \\ or \: \: a = 1m \: s^{ - 2}$

$\Large {{ \sf {Answer :}}}$

His acceleration is

$1m \: s^{ - 2}$