Question

Define acceleration. Starting from a stationary position, Manoj

paddles his bicycle to attain velocity of 6 m/s in 30 seconds.

Calculate the acceleration of the bicycle.​

Answer 1

$Initial \: velocity =0 \\ Final \: velocity =60m/s \\ Time =30sec \\ v=u+at \\ 6=0+a×30 \\ 6=30a \\ a = \frac{6}{30} = 0.2 = 0.2 \: {m/s }^{2} \\ Initial \: velocity =6m/s \\ Final \: velocity =4m/s \\ Time \: taken =5sec \\v=u+at \\ 4=6+a×5 \\ 4−6=5a \\ −2=5a \\ a=−0.4 {m/s}^{2}$

Acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities

Answer 2

$\huge \pink {answer}$

Initialvelocity =0

Finalvelocity =60m/s

Time =30sec

v=u+at

6=0+a×30

6=30a

a=

30

6

=0.2=0.2m/s

2

Initialvelocity =6m/s

Finalvelocity =4m/s

Timetaken =5sec

v=u+at

4=6+a×5

4−6=5a

−2=5a

a=−0.4m/s

2

Acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities