Which pair of quantities represent scalar quantities?
A sailboat on a lake sails 40. meters north and then sails 40. meters due east. Compared to its starting position, the new position of the sailboat is
A ball is thrown straight upward from the surface of Earth. Which statement best describes the ball’s velocity and acceleration at the top of its flight?
As a student runs a plastic comb through her hair, the comb acquires a negative electric charge. This charge results from the transfer of
How would the mass and weight of an object on the Moon compare to the mass and weight of the same object on Earth?
An object is moving with constant speed in a circular path. The object’s centripetal acceleration remains constant in
The horizontal component of the force acting on the crate is
A spring with a spring constant of 68 newtons per meter hangs from a ceiling. When a 12-newton downward force is applied to the free end of the spring, the spring stretches a total distance of
As a student walks downhill at constant speed, his gravitational potential energy
When 150 joules of work is done on a system by an external force of 15 newtons in 20. seconds, the total energy of that system increases by
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