An hourglass is placed on a scale with all its sand in the upper chamber. A short time later, the sand begins to fall into the lower chamber. Which of the following best describes the reading on the scale as a function of time before any sand has accumulated in the bottom chamber?

A cinder block sitting on a frictionless surface is attached to a rope. If the rope is pulled parallel to the surface such that the block accelerates at a rate of , what is the minimum amount of tension the rope must be able to support without breaking?

A cinder block sitting on the ground is attached to a rope. If the rope is pulled such that the block accelerates directly upwards at a rate of , what is the minimum amount of tension the rope must be able to support without breaking?

A object experiences a force of in its direction of motion for . What is the change in the velocity the object moved at during this time?

A experiences a net force that increases its velocity by from rest for . What is the magnitude of this force?

A block which weighs experiences a resultant force of that increases its velocity by . How long did this force act on the block?

A juggler throws a ball straight up into the air, which exerts air resistance on the ball. Which of the following best describes the speed of the ball after it falls and just reaches the juggler's hand?

An object is pushed from rest with a force of that increases its velocity by for . What is the mass of this object?