Problem: A ball thrown horizontally with speed vi 20.0 m/s travels a horizontal distance of 55.0 m before hitting the ground. From what height h was the ball thrown? Which diagram represents an accurate visual overview of the ball?

FREE Expert Solution

Uniform accelerated motion (UAM) equations:

 vf = v0 -gty= (vf+v02)ty= v0t-12gt2 vf2= v02 -2gy

We'll solve for the flight time from the horizontal motion.

vx = vi = 20 m/s

d = vi•t

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Problem Details

A ball thrown horizontally with speed vi 20.0 m/s travels a horizontal distance of 55.0 m before hitting the ground. From what height h was the ball thrown? 

Which diagram represents an accurate visual overview of the ball?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Projectile Motion: Horizontal & Negative Launch concept. If you need more Projectile Motion: Horizontal & Negative Launch practice, you can also practice Projectile Motion: Horizontal & Negative Launch practice problems.

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Based on our data, we think this problem is relevant for Professor Kharchilava's class at UB.