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Martyn Arthur
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Why is there a difference in force required throwing a ball horizontally on the moon and pushing it horizontally it in the spacestation
Thanks
Thanks
The first question would be: What difference are you referring to?Martyn Arthur said:Why is there a difference in force required throwing a ball horizontally on the moon and pushing it horizontally it in the spacestation
Thanks
Force doesn't move things, it changes their speed. The relevant equation is Newton's second law ##F=ma##; ##m## is the same in both cases so the same force will change the speed (##a## is the acceleration and that's just another word for "change of speed") by the same amount. And once you've started it moving, in the absence of friction and air resistance it will keep moving, so no matter how small a force you apply for how short of a time if you wait long enough it will have moved one meter.Martyn Arthur said:On the space station would it require the same force to move a ball one meter, as it would to move the same ball horizontally one meter on Earth/ the Moon in the absence of friction and air pressure?
Any amount of force in the horizontal direction will "throw the ball horizontally". So this is a misleading statement.Martyn Arthur said:Thank you; I will try to be more clear, taking gravity away from all.
On the moon the astronaut requires the same force to throw the ball horizontally in the space station as the astronaut would on Earth.
Any amount of force would start a ball moving in the horizontal direction. How far it will move is just a matter of how long you let it move. So this question can not be answered.On the space station would it require the same force to move a ball one meter, as it would to move the same ball horizontally one meter on Earth/ the Moon in the absence of friction and air pressure?
The gravity on the moon is about 1/6th of the gravity on Earth, so the ball would experience less gravitational pull. This means that the ball would travel farther and take longer to fall back to the ground compared to throwing it on Earth.
Yes, the ball would continue to move in a straight line due to the lack of air resistance on the moon. Without air resistance, there would be no external forces acting on the ball to change its direction.
Pushing the ball in the space station would cause it to accelerate in the direction of the push. However, since the space station is in a state of constant freefall, the ball would appear to float and continue moving in a straight line until it collides with another object or experiences a change in external forces.
No, the ball would behave similarly in a vacuum on Earth and on the moon. In both cases, there would be no air resistance, so the ball would continue to move in a straight line until it experiences a change in external forces.
The mass of the ball does not significantly affect its motion when thrown horizontally on the moon. The acceleration due to gravity is the same for all objects regardless of their mass, so the ball would still travel the same distance and take the same amount of time to fall back to the ground.