(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 33.0 m above sea level, directed at an angle θ above the horizontal with an unknown speed v0

The projectile remains in flight for 6.00 seconds and travels a horizontal distance D of 141.0 m. Assuming that air friction can be neglected, calculate the value of the angle θ.

Calculate the speed at which the rock is launched.

To what height above sea level does the rock rise?

2. Relevant equations

v = v0 +at

x-x0+ v0t + 1/2at^2

v^2 = v0^2 + 2a(x-x0)

x-x0 = 1/2(v0+v)t

3. The attempt at a solution

To be honest I really had no idea how to do this one, all I know is that you have to find theta first before you can do anything else I couldn't find that, so I couldn't get anything else. Help would be appreciated.

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# Homework Help: Rock Launching from a catapult - 2D Kinematics

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