Vaulter horizontal component of velocity
A 55.0 kg pole vaulter running at 9.7 m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.0 m/s and air resistance is disregarded, how high was the jump?
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If you apply 20 N of force on a crate on a warehouse floor and the crate refuses to move, what frictional force does the floor present to the crate?
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