Question

2. An object is launched straight up. The object attains a height of 107 m after 2.50 s.
When (i.e. how long after launch) will the object have a speed of 20 m/s on the way back down?

Answer 1

well that's physics

Answer 2

2 s

Answer 3

could u explain to me how u got the answer.please

Answer 4

please

Answer 5

have u seen this formula in physics v= u +at

Answer 6

uhh not exactly

Answer 7

is taht ther formula u used