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An object with projectile motion constantly changes direction.
TRUE
FALSE
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The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions
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Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
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The pressure proportional to the area a- inversely b- directly c- increase d-decrease
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An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?
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An object with projectile motion constantly changes direction.
TRUE
FALSE...
TRUE
FALSE...
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