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 \: = (v - u)/(t)`

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

`a \: = (v - u)/(t) \\ or \: \: a = ((15 - 5))/(10) m \: s^( - 2) \\ or \: \: a \: = (10)/(10)m \: s^( - 2) \\ or \: \: a = 1m \: s^( - 2)`

`\Large {{ \sf {Answer :}}}`

His acceleration is

`1m \: s^( - 2)`