Answer:
Explanation:
When a person jumps into a swimming pool and is uninjured while the same person is injured when he jumped from the same height onto the concrete floor, this can be explained by the impulse-momentum concept.
When a person jumps into the swimming pool, water provides cushioning and gradually decreases the velocity of a person with a considerable amount of time. While on the other hand concrete floor does not provide the cushioning effect as it is rigid.
So, force is imparted at a short amount of time causing more injury compared to the swimming pool case.
Technically, we can't answer the question with the given information.
Even though the cart's speed is constant, it may be turning an corner,
or driving along a curved path. If it's not driving in a straight, then there
must be some force acting on it.
If the cart IS driving in a straight line, AND its speed is constant, then
there can't be any net force acting on it. In that case, the correct choice
is ' B '. (I'm sure this is right IF the cart is driving in a straight line.)
Answer:
3/4 filled with water
Explanation:
x = Fraction of box filled
g = Acceleration due to gravity = 9.81 m/s²
= Density of water
V = Volume of water
Weight of empty box is equal to the weight of the water displaced
As all the forces are conserved
So, the box starts to sink when the box is 3/4 filled with water
Answer:
The answer is the mass of d
CO2 or carbon dioxide. You breathe it out and it is one of the greenhouse effects gasses that need to be limited.
