What is the impact of faster velocity and heavier mass and the collision of the object? Why is this so?

Answer 1

I think it is conservation of momentum.

p=mv
p(before) = p(after)

for example in an elastic colision
m1v=m1v1+m2v2
also
Ke(before)= Ke(after) ( if the energy was not converted to some othe form)

For inelastic collision (masses stick together)

m1v=(m1+m2)v2

Conclusion:
More mass or/and hier velocity will result in stronger impact and larger momentum.

Answer 2

i dont quite understand youre question

but ill try to answer something

Momentum is defined as : mass x velocity
so an increase in mass and/or velocity will lead to an increase in momentum.
During a collision we usually use the conservation of linear momentum to determine events before and after the collision.
An object with high momentum will be more unaffected by a collision than an object with a low momentum, and it will deviate less in its direction after the collision, and will lose less of its speed.
This is because of how momentum is defined, and common sense tells us something travelling very very fast, but with even little mass (like a bullet) causes alot of damage....
and something travelling relatively slow, but with a large mass (say a truck travelling at 30mph) , we can see that both these objects possess a large momentum and are relatively undamaged by say a collision with a person.