7 CALCULATOR P COLOR THEME
ZOOM
7. A student is planning to conduct a lab to investigate the forces on a fan cart. The student
plans to increase the mass of the fan cart in each trial and measure the resulting
acceleration while keeping the force exerted by the fan the same.
Which of the following correctly identifies the independent and control variables in this
lab?

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p