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Answer:
A
Explanation:
More potential energy equals more kinetic
Answer:
Va is two times greater than Vb
Explanation:
The maximum height reached by the balls are:

Since we are told that Ya = 4Yb:

Simplifying the equation:


Answer:
Time taken, t = 30.15 minutes
Explanation:
It is given that,
Distance from the center of planet, r = 40 miles
Speed of the shuttle, v = 500 miles per hour
Let t is the time taken by it to complete one full orbit. The displacement of the shuttle is,


d = 251.32 miles
Now time can be calculated using the expression for the velocity as :



t = 0.50264 hours
or
t = 30.15 minutes
So, the shuttle will take 30.15 minutes to complete one full orbit. Hence, this is the required solution.