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

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

Step-by-step 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* 3s`

`v = 20.6 m/s`