Class 9 Exam > Class 9 Questions > When an object is thrown up, the force of gr...
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When an object is thrown up, the force of gravity –
- a)Is opposite to the direction of motion
- b)Is in the same direction as to the direction of motion
- c)Becomes zero at the highest point
- d)Increases as it rises up
Correct answer is option 'A'. Can you explain this answer?
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When an object is thrown up, the force of gravity –a)Is opposite to t...
Explanation:
When an object is thrown up, it experiences the force of gravity acting on it. The force of gravity is always directed towards the center of the Earth. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. Therefore, the force of gravity on the object is opposite to the direction of its motion.
Force of gravity:
The force of gravity is a force that attracts objects towards each other. On Earth, the force of gravity is due to the mass of the Earth pulling objects towards its center. The magnitude of the force of gravity depends on the mass of the object and the distance between the object and the center of the Earth.
Direction of motion:
When an object is thrown up, it moves in the upward direction initially. As it moves upward, the force of gravity acts in the opposite direction, pulling the object downwards. This force of gravity gradually decreases the upward velocity of the object until it reaches its highest point and comes to a momentary stop.
Zero force at the highest point:
At the highest point of its trajectory, the object momentarily stops moving in the upward direction and starts moving in the downward direction. At this point, the force of gravity becomes zero because there is no further upward motion for the force to oppose.
Increasing force as it rises up:
The force of gravity on an object is constant regardless of its position or motion. However, the effect of gravity on the object changes as it rises up. Initially, when the object is close to the surface of the Earth, the force of gravity is stronger, and as the object moves higher, the force of gravity decreases due to the increase in distance from the center of the Earth.
Therefore, the correct answer is option 'A' - the force of gravity is opposite to the direction of motion when an object is thrown up.
When an object is thrown up, it experiences the force of gravity acting on it. The force of gravity is always directed towards the center of the Earth. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. Therefore, the force of gravity on the object is opposite to the direction of its motion.
Force of gravity:
The force of gravity is a force that attracts objects towards each other. On Earth, the force of gravity is due to the mass of the Earth pulling objects towards its center. The magnitude of the force of gravity depends on the mass of the object and the distance between the object and the center of the Earth.
Direction of motion:
When an object is thrown up, it moves in the upward direction initially. As it moves upward, the force of gravity acts in the opposite direction, pulling the object downwards. This force of gravity gradually decreases the upward velocity of the object until it reaches its highest point and comes to a momentary stop.
Zero force at the highest point:
At the highest point of its trajectory, the object momentarily stops moving in the upward direction and starts moving in the downward direction. At this point, the force of gravity becomes zero because there is no further upward motion for the force to oppose.
Increasing force as it rises up:
The force of gravity on an object is constant regardless of its position or motion. However, the effect of gravity on the object changes as it rises up. Initially, when the object is close to the surface of the Earth, the force of gravity is stronger, and as the object moves higher, the force of gravity decreases due to the increase in distance from the center of the Earth.
Therefore, the correct answer is option 'A' - the force of gravity is opposite to the direction of motion when an object is thrown up.
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When an object is thrown up, the force of gravity –a)Is opposite to t...
Force of gravity is directed downwards, against the direction of the object going upward.
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