# A projectile in free fall

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A marble is fired at angle +30Â° from a roof top x,y origin 50 m above ground with velocity such that it falls into a bowl on the ground at (218, -50).

a. Find the original speed Vo.

b. Find the total time of flight of the marble.

See diagram attachment for picture showing known data.

https://brainmass.com/physics/work/projectile-problem-marble-fired-roof-known-angle-5380

#### Solution Preview

A projectile in free fall has vertical acceleration g downward caused by the downward pull of gravity, and zero acceleration horizontally since there is no horizontal force on ...

#### Solution Summary

A projectile in free fall problem is solved. A marble fired from a roof at a known angle is found. The total time of flight of the marble and velocity are calculated.

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