Question

If you toss a ball straight upward at 40 m/s with no air resistance, what will be its speed 2 seconds later?
Explain Your answer!

Answer 1

Answer:

the speed after 2 seconds = 20m/s

Explanation:

I took g as -10m/s² because the ball was moving against gravity

using V = u + gt

V = 40 - 10 X 2

V = 40 - 20

V = 20m/s

Answer 2

I got the same answer: after 2 second the speed of the ball will be 20 m/s