Answer:
When a forming planet is big enough, it starts to clear its path around the star it orbits. ... A planet's gravity pulls equally from all sides. Gravity pulls from the center to the edges like the spokes of a bicycle wheel. This makes the overall shape of a planet a sphere, which is a three-dimensional circle.
To solve this problem we will use the concepts given by the rotational kinetic energy which describes the energy in a body product of its moment of inertia and its angular velocity, mathematically this is given as,
Where,
I = Moment of Inertia
= Angular Velocity
Replacing with our values we have that,
Therefore the rotational energy is 178.125J
1. A spring or elastic can be stretched to store energy as it wants to return to rest.
2. Gravitational every can be is stored by moving a ball against gravity when lifted then released when bounced.
3. Separating two charged plates will store energy as the plates want to return to their original position.
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The answer requures the application of the knowledge of electrostatics to solve the problem successfully. The solution can be found in the attachment below.
Explanation:
Vi =0 ( as car starts from rest )
Acceleration= a = 5m/s²
t =12sec
Vf =Vi + at
Vf= 0 + (5m/s²) (12s)
Vf=60 m/s