Looking for classes? Ksquare Career Institute, Bengaluru →
A car starts from rest and accelerates at $5\ m/s^2$. At $t=4$ s, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at $t=6$ s?
A
$20\ m/s,\ 0$
B
$20\sqrt{2}\ m/s,\ 0$
C
$20\sqrt{2}\ m/s,\ 10\ m/s^2$
D
$20\ m/s,\ 5\ m/s^2$