Question

you throw a ball from the ground upward with a speed of 50 m/s. what would be its speed after 3 seconds

Answer 1

Answer:

The 20.6 m/s will be the speed of ball after 3 seconds.

Explanation:

Initial velocity of the ball = u = 50 m/s

Final velocity of the ball = v = ?

Acceleration due to gravity = a = $-9.8m/s^2$

( ball is thrown against the gravity)

$v=u-gt$ (first equation of motion)

$v=50 m/s-9.8 m/s\times 3s$

$v = 20.6 m/s$