SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Frictional force caused the ball to roll down the hill, but air resistance caused the ball to slow down and stop
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Magnetic force caused the ball to roll down the hill, but gravity caused the ball to slow down and stop
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The force of the hill caused the ball to roll down it, but gravity caused the ball to slow down and stop
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Gravity caused the ball to roll down the hill, but frictional force caused the ball to slow down and stop
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Detailed explanation-1: -A ball rolls down from the top of a grassy hill, reaches the bottom of the hill, continues to roll, and then starts to slow down and comes to a stop. What forces caused this ball’s motion? Gravity caused the ball to roll down the hill, but frictional force caused the ball to slow down and stop.
Detailed explanation-2: -Since the ball eventually stops, there must be an unbalanced force acting upon the ball. The unbalanced force is called friction. There is friction between the grass and the ball. Friction is a type of force that limits motion between two surfaces that are touching.
Detailed explanation-3: -The force of the hill caused the ball to roll down it but gravity caused the ball to slow down and stop. Gravity caused the ball to roll down the hill but friction caused the ball to slow down and stop.
Detailed explanation-4: -Which best explains why a ball increases in speed as it rolls down a hill? The ball increases in speed because of friction.
Detailed explanation-5: -The force of friction acts between the two surfaces by opposing the relative motion of one surface over the other. For example, when the ball rolls on the ground, the force of friction acts between the surface of the ball and the surface of the ground.