# EXERCISEHINTS: GETTING STARTED I I'M STUCK!A catapult launches a rock at a 33° angle with respect to the horizontal. Find the maximum heightattained if the speed of the rock at its highest point is 26 m/s.If you knew the vertical component of initial velocity, could you find the maximum height of the rock? Tryusing kinematics and projectile motion ideas to guide your thinking, then apply energy ideas to arrive atthe same answer. mNeed Help? Read It

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Step 1

In a projectile motion horizontal component of velocity will be always same since there is no any force along horizontal direction. The vertical component of velocity will keep on decreasing as height increases due to the gravitational force which acts in the downward direction.

Therefore, at maximum height the vertical component of velocity will be zero. The horizontal component of velocity becomes equal to speed of the projectile at maximum height.

The equation of horizontal component of velocity is given below.

Step 2

The maximum height attained by the projec...

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