Period T = 1/f, where f = frequency = 5 Hz
T = 1/5 = 0.20 s
Period = 0.20 seconds.
Answer: The average velocity is 150 km/h
Explanation: 70+80=150
I think the correct answer from the choices listed above is option B. The <span>andes mountains in south america was not created by subduction. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Answer:
B. twice as much kinetic energy
Explanation:
Lets take the mass of the first marble =2 m
the mass of the second marble = m
We know that velocity of particle does not depends on their mass that is the velocity of both mass will be same after dropping from the roof.
We know that kinetic energy of a mass is given as

Kinetic energy for heavier mass

Kinetic energy for light mass

KE=2 KE '
Form above two equation we can say that ,the kinetic energy for the heavier mass is twice the lighter mass.
Therefore the answer will be B.