The answer is b, anything that has mass and takes up space
Answer:
momentum=mass×velocity
momentum =400kg×20m/s=8000kg.m/s
Answer:
d = 11.1 m
Explanation:
Since the inclined plane is frictionless, this is just a simple application of the conservation law of energy:

Let d be the displacement along the inclined plane. Note that the height h in terms of d and the angle is as follows:

Plugging this into the energy conservation equation and cancelling m, we get

Solving for d,
