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Two metal balls are the same size but one weighs twice as much as the other. The balls are dropped from the roof of a single story building at the same instant of time.
Which animation best represents how the balls would fall to the ground below?
A stone is dropped from the roof of a single story buliding.
Which animation best represents how the stone would fall to the ground below?
A boy throws a steel ball straight up. Consider the motion of the ball only after it has left the boy's hand but before it touches the ground, and assume that the forces exerted by the air are negligible.
For these conditions, the forces(s) acting on the ball are
An elevator is being lifted up an elevator shaft at a constant speed by a steel cable as depicted in the animation. All frictional effects are negligible
While the elevator is rising, forces on the elevator are such that: