- #1

Intr3pid

- 39

- 0

a) what is their initial "launch" speed off the ground?

b) how long are they in the air?

i don't want you guys to give me an answer. Can you guys point me in the right direction on how to solve these questions?

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- Thread starter Intr3pid
- Start date

- #1

Intr3pid

- 39

- 0

a) what is their initial "launch" speed off the ground?

b) how long are they in the air?

i don't want you guys to give me an answer. Can you guys point me in the right direction on how to solve these questions?

- #2

Kazza_765

- 171

- 0

So for this case you know that.

x = 1.2m (displacement)

a = -9.8m/s^2 (accelleration due to gravity)

v = 0 (final velocity, this occurs when they are at maximum height)

u = ? (initial velocity, what you need to find)

So you need to find the equation that uses x, a, v, and u and solve it.

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