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When a stone is thrown upward with a certain speed then its kinetic energy at the highest point is
- a)Maximum
- b)Minimum
- c)Zero
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
When a stone is thrown upward with a certain speed then its kinetic e...
At highest point, velocity is zero.
Hence, Kinetic energy is zero.
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When a stone is thrown upward with a certain speed then its kinetic e...
Explanation:
When a stone is thrown upward with a certain speed, its kinetic energy at the highest point is zero. This can be explained by understanding the concept of kinetic energy and the motion of the stone.
Kinetic Energy:
Kinetic energy is the energy possessed by an object due to its motion. It is given by the equation:
Kinetic Energy = 1/2 * mass * velocity^2
Where mass is the mass of the object and velocity is the speed of the object.
Motion of the Stone:
When the stone is thrown upward, it moves against the force of gravity. As it moves higher, its speed decreases due to the opposing force of gravity. At the highest point of its trajectory, the stone momentarily comes to a stop before it starts to fall back down.
Kinetic Energy at the Highest Point:
At the highest point of the stone's trajectory, its velocity becomes zero. Therefore, according to the equation of kinetic energy, the stone's kinetic energy also becomes zero. This is because kinetic energy is directly proportional to the square of the velocity. When the velocity is zero, the kinetic energy will also be zero.
Therefore, the correct answer is option 'C' - Zero.
Conclusion:
When a stone is thrown upward with a certain speed, its kinetic energy at the highest point is zero. This is because the stone momentarily comes to a stop at the highest point, resulting in zero velocity and hence zero kinetic energy.
When a stone is thrown upward with a certain speed, its kinetic energy at the highest point is zero. This can be explained by understanding the concept of kinetic energy and the motion of the stone.
Kinetic Energy:
Kinetic energy is the energy possessed by an object due to its motion. It is given by the equation:
Kinetic Energy = 1/2 * mass * velocity^2
Where mass is the mass of the object and velocity is the speed of the object.
Motion of the Stone:
When the stone is thrown upward, it moves against the force of gravity. As it moves higher, its speed decreases due to the opposing force of gravity. At the highest point of its trajectory, the stone momentarily comes to a stop before it starts to fall back down.
Kinetic Energy at the Highest Point:
At the highest point of the stone's trajectory, its velocity becomes zero. Therefore, according to the equation of kinetic energy, the stone's kinetic energy also becomes zero. This is because kinetic energy is directly proportional to the square of the velocity. When the velocity is zero, the kinetic energy will also be zero.
Therefore, the correct answer is option 'C' - Zero.
Conclusion:
When a stone is thrown upward with a certain speed, its kinetic energy at the highest point is zero. This is because the stone momentarily comes to a stop at the highest point, resulting in zero velocity and hence zero kinetic energy.
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