# Gravity Force applied

**Classical Mechanics**Level 4

A mass of 100 g strikes the wall, from left, with a speed of 5 m/s making an angle of 60 degree from the horizontal.

And rebounds with the same speed. The contact time is \[2\times 10^{-3} seconds.\]

Then what is the force applied by the wall?

Thanks @Caleb Townsend for correcting me!