Answer:
7 s
Explanation:
u = Initial velocity of rock = 12.2 m/s
= Angle of throw =
x = Displacement in x direction = 25 m
Displacement in x direction is given by
Time taken to reach the ground is 7 s.
Write a scientific explanation how the position of an object affects the amount of potential energy the object possesses
1 answer:
The gravitational potential energy of an object is directly proportional to its height above the ground
Explanation:
The gravitational potential energy (GPE) of an object is the amount of energy possessed by the object due to its position in a gravitational field.
Near the Earth's surface, the GPE of an object is given by:
where:
m is the mass of the object
is the acceleration of gravity
h is the heigth of the object measured relative to the ground
As we see from the equation, the GPE is directly proportional to h, the height above the ground. This means that:
- If the object is lifted (h increases), its GPE also increases
- If the object is lowered (h decreases), its GPE also decreases
Learn more about gravitational potential energy here:
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