A constant force is exerted on a cart (initially at rest) on an air track. Neglect friction. The force acts for a short time and gives the cart a certain final speed. To reach the same final speed with a force that is only half as big, the force must be exerted on the cart for a time interval the stronger force.
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A constant force is exerted on a cart (initially at rest) on an air track. Neglect friction. The for...
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