Answer: The correct answer is option(c).
Explanation:
Acceleration of the van ,a= \(2.15 m/s^2\)
Final velocity of the van,v = 20.00 m/s
Initial Velocity ,u= ?
Time taken by van to attain the velocity,t = 7 seconds
by using the firat equation of motion:
v = u + at
\(20.00 m/s=u+2.15m/s^2\times 7 s\)
\(u=20.00m/s-2.15m/s^2\times 7 s=4.95 m/s\)
The correct answer from the given option is 4.95m/s that is option (c).
