Answer:
The Sun
Explanation:
A few main examples of the sun providing the Earth with energy; It is part of the process of photosynthesis. Sunlight can be used to produce solar energy. The sun keeps the Earth warm enough for living organisms to survive.
Answer:
Explanation:
Sphere B and sphere A are touching so they will act as a single body . A positively charged sphere C is brought near sphere B . So there will be induction of charge on sphere B and sphere A . Opposite charge will be induced on nearer sphere and same charge will be induced on distant sphere . Hence sphere B will be negatively charged and sphere A will be positively charged. The amount of charge induced on sphere B and A will be same and it will remain as long as sphere C is kept near sphere B . As soon as sphere C is removed , induced charges will also neutralize each other .
Resultant: in biomechanics, often resultant vectors are calculated, in which case a single vector is formed by combining (or summing) two or more other vectors. For example, combining horizontal and vertical forces into a resultant force.
The relative velocity of the athlete relative to the ground is 5.2 m/s
The given parameters;
constant velocity of the athlete, V = 5.2 m/s
let the velocity of the ground = Vg = 0
The relative velocity concept helps us to determine the velocity of a moving object relative to a stationary observer.
The athlete is the moving object in this question while the ground is stationary.
The relative velocity of the athlete relative to the ground is calculated as follows;
Thus, the relative velocity of the athlete relative to the ground is 5.2 m/s
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Answer:
Explanation:
As there are no air resistance, the only force acting on the rock will be the gravitational pull of the moon. Near the surface of the moon, we can take the acceleration from the gravitational pull as constant.
Taking this in consideration, we know that the equation for the speed v at time t will be:
.
where is the initial speed, and a the acceleration of the object.
Now, as the initial speed is zero, at time t' the speed will be:
.
and at time 4t'
.
but this is
.
.
So, the answer is 4v.