given horizontal distance=68 m

angle with respect to horizontal, 35.8

and time object spends in the air is 3.0 seconds.

thanks.

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- Oct 25th 2007, 11:57 AMbeetzphysics question; how to find the velocity
given horizontal distance=68 m

angle with respect to horizontal, 35.8

and time object spends in the air is 3.0 seconds.

thanks. - Oct 25th 2007, 12:20 PMSoroban
Hello, beetz!

Quote:

Given: horizontal distance = 68 m

angle with respect to horizontal: 35.8°

time object spends in the air: 3.0 seconds.

Find the initial velocity.

We're expected to know this formula: .

. . where: .

We are given: .

. . Hence, we have: .

The object is on the ground when and

So we have: .

Therefore: .

- Oct 25th 2007, 12:29 PMbeetz
thank you so much.

the equation in my notes is a bunch of mumbo jumbo.

though, almost everything in physics seems like a bunch of mumbo jumbo to me. :p - Oct 25th 2007, 03:02 PMCaptainBlack