A ball is dropped from a height and the distance covered by the ball each second is recorded. The image shows the distance the ball covers each second. What can be understood about the effect of gravitational force of Earth on the ball.
options
(a)It causes the ball to decrease its speed of fall.
(b) It causes the ball to fall with a constant speed.
(c) It increases the distance covered by the ball with every passing second.
(d) It decreases the distance covered by the ball with every passing second.
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Answer:
It causes the ball to fall with a constant speed
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The effect of the gravitational force of Earth on the ball is that (c) it increases the distance covered by the ball with every passing second.
- When the ball is dropped from a height, the gravitational force of the earth pulls it down.
- The force causes the ball to accelerate with a constant acceleration g. g= 9.8 m/s². This acceleration acts downwards.
- Since the ball's velocity and g both act downwards, thus the speed of the ball constantly increases during the motion.
- Due to this, it covers more distance per second as it approaches the ground.
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