If a ball is thrown vertically upwards with a velocity of 40ms, assuming (g=10ms2) then what will be the velocity of the ball after two seconds?
20 m/s
According to the 1st equation of motion, v = u - gt.
Here, initial velocity, u = 40ms
g = 10 ms2
Time, t = 2 sec
v = 40 - 10(2) = 20ms.