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A boat loaded with scrap iron floats in a swimming pool. When the iron is thrown overboard, the pool level will

The power expended for a barbell raised 2.0 m in 2 s is

Which has greater kinetic energy: a car traveling at 30 km/h or another car of half the mass traveling at 60 km/h?

Just after a big fish swallows a small fish, the momentum of the two-fish system is

A projectile is launched at an angle of 15° above the horizontal and lands downrange. With no air resistance, what other projection angle for the same speed would produce the same downrange distance?

A kilogram is a unit of

If the radius of the Earth somehow decreased with no change in mass, your weight would

A cat and a mouse run along a road with the same kinetic energy. The faster runner is the

If a monkey floating in outer space throws his hat away, the hat and the monkey will both move

If a battleship sinks in a canal lock, the water level in the lock