Speed = frequency * wavelength
Answer:
This reduces the average force applied during the landing process/ or you can say it reduces the impact your body takes.
Explanation:
Answer:
<h2>D) S increases because at all times Rock X falls with a greater speed than Rock Y</h2>
Explanation:
As we know that Stone X is dropped first and then after some time stone Y is dropped
Now we have

similarly for Y

now the relative acceleration of two stones while they are in air is ZERO
also we know from above equations

so the separation between two stones will keep on increasing as the speed of X is more than the speed of Y
Answer:
548800J
Explanation:
Given parameters:
Mass of roller coaster = 800kg
Height of hill = 70m
Unknown:
Change in potential energy = ?
Solution:
The change in potential energy is the difference between the potential energy at the bottom and at the top.
Potential energy at the bottom is 0J
So;
Change in potential energy = mgh - 0
m is the mass, g is the acceleration, h is the height
Change in potential energy = 800 x 9.8 x 70 = 548800J
It is because change in the Mass of the object balances the change in the Volume of the object equally...........