Problem Description:
The task is to identify which ball moves faster in each of the two scenarios presented in the image. The worksheet focuses on understanding how forces and movement affect objects.
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Solution Explanation:
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Scenario 1: Balls on Inclined Surfaces
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Left Image: The ball is on a flat surface.
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Right Image: The ball is on an inclined surface.
Analysis:
- When a ball is placed on a flat surface, there is no gravitational force acting along the surface to cause it to move downward. Therefore, the ball will remain stationary unless another force (e.g., a push) is applied.
- When a ball is placed on an inclined surface, gravity acts along the slope, causing the ball to roll down. This results in motion.
Conclusion for Scenario 1:
The ball on the inclined surface (right image) will move faster because gravity provides a force that causes it to roll downhill.
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Scenario 2: Pushing Balls
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Left Image: A person is pushing a smaller ball.
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Right Image: A person is pushing a larger ball.
Analysis:
- The size of the ball affects its mass. Larger balls generally have more mass than smaller balls.
- When a person pushes a ball, the force applied by the person must overcome the ball's inertia (resistance to change in motion). A larger ball with more mass requires more force to accelerate at the same rate as a smaller ball.
- Assuming the person applies the same amount of force in both cases, the smaller ball will accelerate faster because it has less mass and therefore less inertia.
Conclusion for Scenario 2:
The smaller ball (left image) will move faster because it has less mass and is easier to accelerate with the same force.
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Final Answer:
- For Scenario 1: Circle the ball on the
inclined surface (right image).
- For Scenario 2: Circle the
smaller ball (left image).
$$
\boxed{\text{Inclined surface ball, smaller ball}}
$$
Parent Tip: Review the logic above to help your child master the concept of pre k science worksheets.
