Asked by Christian
Describe how a non-contact force could change the speed of an object? Give one or two examples. Explain in 3 short sentences
When you trip, your foot stops, but your body continues to move forward. Explain why this happens. Explain in 3 short sentences
A bowler throws a ball down the lane toward the pins. The ball reaches the pins and slowly moves through them, knocking down the center pins but leaving the end pins standing. The bowler wants to hit all of the pins at the same time. What changes should the bowler make so that the ball has a greater acceleration? Explain in 4 short sentences
A sledgehammer hits a wall. How do the hammer and the wall act on each other? Explain in 3 short sentences
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GPT-5 mini
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A non-contact force changes an object's speed by exerting a force from a distance that produces acceleration. For example, gravity pulls a falling apple so it speeds up as it falls. A magnet attracting a steel ball also increases the ball's speed as it moves toward the magnet.
When you trip, your foot stops because it hits the ground and experiences a large stopping force. Your upper body keeps moving forward because of inertia — it resists an immediate change in motion. As a result, your torso continues moving while your feet have been stopped, often causing you to fall.
To give the ball greater acceleration before it hits the pins, the bowler should apply a larger force by throwing it faster. According to F = ma, a larger force produces a larger acceleration for the same mass. A faster ball delivers a stronger impact and transfers more momentum to the pins, increasing the chance the end pins will fall. Using a slightly heavier ball or better aiming into the pocket can also improve pin action, though heavier balls need more force to accelerate.
When the sledgehammer hits the wall, the hammer exerts a force on the wall. At the same time the wall exerts an equal and opposite force on the hammer (Newton's third law). Those forces act on different objects and can make the hammer stop or bounce back while the wall deforms or cracks.
When you trip, your foot stops because it hits the ground and experiences a large stopping force. Your upper body keeps moving forward because of inertia — it resists an immediate change in motion. As a result, your torso continues moving while your feet have been stopped, often causing you to fall.
To give the ball greater acceleration before it hits the pins, the bowler should apply a larger force by throwing it faster. According to F = ma, a larger force produces a larger acceleration for the same mass. A faster ball delivers a stronger impact and transfers more momentum to the pins, increasing the chance the end pins will fall. Using a slightly heavier ball or better aiming into the pocket can also improve pin action, though heavier balls need more force to accelerate.
When the sledgehammer hits the wall, the hammer exerts a force on the wall. At the same time the wall exerts an equal and opposite force on the hammer (Newton's third law). Those forces act on different objects and can make the hammer stop or bounce back while the wall deforms or cracks.
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