[tex]\Large {{ \sf {Question :}}} [/tex]
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?
[tex]\Large {{ \sf {Given :}}} [/tex]
Initial Velocity (u) - 5 m/s
Final Velocity (v) - 15 m/s
Time (t) - 10 sec
[tex]\Large {{ \sf {Formulae :}}} [/tex]
If the velocity of an object changes from an initial value u to the final value v in time t, the acceleration a is,
[tex]a \: = \frac{v - u}{t} [/tex]
[tex]\Large {{ \sf {Step-by-step explanation :}}} [/tex]
[tex]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} [/tex]
[tex]\Large {{ \sf {Answer :}}} [/tex]
His acceleration is
[tex]1m \: s^{ - 2} [/tex]