What do you think happened after Bepin Babu came to know the truth? Was he angry with this friend for playing such a trick on him ? Or do you think he decided to help a friend in need?
Answers
Answer:
We can write this as:
a=\frac{\Delta v}{t}a=
t
Δv
Where
a is the acceleration
v is velocity
t is time
\DeltaΔ is "change in"
For this problem , we are given
a = 1.2
t = 10
Putting into formula, we get:
\begin{gathered}a=\frac{\Delta v}{t}\\1.2=\frac{\Delta v}{10}\\\Delta v = 1.2*10\\\Delta v = 12\end{gathered}
a=
t
Δv
1.2=
10
Δv
Δv=1.2∗10
Δv=12
So, the change in velocity is 12 m/s
The change in velocity can also be written as:
\Delta v = Final \ Velocity - Initial \ VelocityΔv=Final Velocity−Initial Velocity
It is given Final Velocity = 16, so we put it into formula and find Initial Velocity. Shown Below:
\begin{gathered}\Delta v = Final \ Velocity - Initial \ Velocity\\12=16-Initial \ Velocity\\Initial \ Velocity = 16 - 12 = 4\end{gathered}
Δv=Final Velocity−Initial Velocity
12=16−Initial Velocity
Initial Velocity=16−12=4
hence,
Initial Velocity is 4 m/s.
Explanation: