Need help with this physics problem asap!!! Projectile motion anyone?

A soldier is responsible for measuring the muzzle velocity of a new rifle. Knowing the principles of the movement of projectiles, he decides to carry out a simple experiment in the indoor shooting range. The soldier hooks a target at a distance d = 104 m from the end of the barrel. The rifle is mounted so that the bullet exits horizontally at the same height as the target. After 6 attempts, the soldier totals the values ​​he has measured for the distance, h, from the firing target. What is the most accurate muzzle velocity the soldier can report to his sergeant?

Answer 1

I would just average the values ​​of h:
H = 40.23cm / 6 = 6.705cm

then use H = ½at²
0.06705m = ½ * 9.8m/s² * t²
t = 1.17 sec

and finally
V = d / t = 104 m / 1.17 s = 88.9 m/s

Alternatively, you could calculate all 6 speeds and then average them – but I think you’ll get a different answer.

I hope this helps you!

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