There are some interesting derivations one can make for projectile motion. Consider the following:

- Projectile reaches its peak when so the time at the peak is:
- At
- Since
- Since there is no air resistance, the motion of the projectile is symmetric, hence:
- Total time of flight
- Since ,
- The total horizontal displacement should be
- Since the maximum vertical displacement is reached at ,

To sum up

But trust me, it’s worth your while to understand how these are derived instead of just memorizing them.

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