Answer:30.34 m
Explanation:
Given
launch angle
Initial velocity u=31.9 m/s
Position of net = 39.1 m
We know equation of trajectory of a projectile is
Therefore Net should be placed 30.34 m above ground
Gravitational potential energy stored in cat= mgh ( m= mass of cat, h = height of cat from ground) = 7x9.8x3 = 205.8 J
The net force is determined is basically who is pushing harder in a specific direction.Like since there bith pushing in the same direction the net force is in the direction that they are pushing.
I think its when there are higher energies.