Answer:
Hence, the board will be farther away from the origin than initially.
Explanation:
We are given a situation, in which a skate board is in motion for 5 seconds. It is stated that initially the skate board is in negative side of the origin and its velocity during the 5 seconds is also negative. We are required to determine whether the skate board will be farther or closer to the origin at the end of the motion.
Lets assume that the left side of the origin is negative while the right side is positive. So, the skate board is at the left side of origin initially. Since, its velocity is negative, it means the board is moving more towards the left side. <u>Hence, the board will be farther away from the origin than initially.</u>
Answer:
We can also prove the conservation of mechanical energy of a freely falling body by the work-energy theorem, which states that change in kinetic energy of a body is equal to work done on it. i.e. W=ΔK. And ΔE=ΔK+ΔU. Hence the mechanical energy of the body is conserved
Explanation:
Its either B or C but im leaning more towards B but i could be wrong
Answer:
The acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.
Explanation:
Let suppose that maximum height of the arc is so small in comparison with the radius of the Earth.
Since the ball is launched upwards, then the ball experiments a free-fall motion, that is, an uniform accelerated motion in which the element is accelerated by gravity. Then, the acceleration experimented by the motion remains constant at every instant and position.
Besides, the gravitational acceleration in the Earth and, in consequence, the acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.
Explanation:
The electric force between charges is given by the formula as follows :
k is electrostatic constant
r is distance between charges
Here, charges are equal and opposite. So,
It is clear the force is inversely proportional to the distance between charges and directly proportional to the product of charges. So, greatest force will be providing by :
- Increasing the magnitude of charges
- Decreasing the distance between charges.
