Answer:

Explanation:
From the question we are told that:
coefficient of static friction 
Velocity 
Generally the equation for Conservation of energy is mathematically given by



acceleration due to gravity is always 9.8 m/s/s (on earth)
Answer: is so be smart and study hard you can always do it no mater what happens
Explanation:is this what you want
Answer:
Speed of larger piece is 
Explanation:
We apply the principle of conservation of momentum.
The watermelon is initially at rest. The initial momentum = 0 kg m/s in all directions.
After the collision,
Vertical momentum = momentum of piece in y-direction + y-component of momentum of larger piece = 
Here,
is the y-component of velocity of larger piece.
This is equal to 0, since the initial momentum is 0.

Horizontal momentum = momentum of piece in x-direction + x-component of momentum of larger piece = 
Here,
is the x-component of velocity of larger piece.
This is also equal to 0, since the initial momentum is 0.

The velocity of the larger piece,
, is the resultant of
and
. Since they are mutually perpendicular,


Answer:
it is because the refracting surgaces of the prism are not parallel with each other