Question

34. A body projected upwards with initial velocity 20 m/s. Calculate the velocity of the body
after 1 sec.
a) 20 m/s
b) 30 m/s
c) 10 m/s
d) O m/s​

Answer 1

Given: u= 20m/s, g= 10m/s^2, t= 1s

Using 1st equation of motion

$v = u - gt$

$v = 20 - 10 \times 1$

$v = 10 \frac{ m }{s}$

Therefore answer is (c)