In class you learned that physics needs only seven (7) basic quantities to measure everything in the known universe. However, it is combinations of these quantities that we use mostly, especially in our everyday lives. For example, two of the basic quantities are length and time. We can put them together and derive speed. How many different derived quantities do you think we can have using only the seven basic quantities?

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