Question

I am poor at physics. Please explain as much as possible

Step 1

To solve the question, the concept of projectile motion is used. The initial height and final height of the human projected through the cannonball is provided.

Write the kinematic equation for vertical motion of the projectile.

Step 2

Here, *h* is the human’s final height, *h*_{o} is the human’s initial height, *u*_{y} is the human’s initial velocity in the vertical direction and *t* is the time taken by the human to reach to a height *h *during its motion.

Since, the human is projected at an angle of 65.0^{O} at a speed 9.20 m/s, the initial vertical velocity is given by the sine component of the initial speed. That is,

Step 3

Substitute 8.34 m/s for *u*y, 4.0 m for *h, *2.0 m for *h*o and 9.8 m/s2 for ...

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Sorry about that. What wasn’t helpful?