Practice Problem: Pushing Boxes

Professor Dave explains a physics problem involving moving 10 heavy boxes across a frictionless floor. The task requires understanding motion and force, specifically using Newton's second law to calculate acceleration. By applying kinematics equations, the time to move one box is determined, and then multiplied by 10 to find the total time for all boxes. The problem is simplified by assuming no friction and balanced gravitational and normal forces.

What is the total mass of the boxes that need to be moved?

• 10 kilograms

• 50 kilograms

• 100 kilograms

• 500 kilograms

Which law of motion is used to calculate the acceleration of the boxes?

• Newton's Second Law

• Law of Universal Gravitation

• Newton's First Law

• Newton's Third Law

What is the calculated acceleration when a force of 16.3 newtons is applied to a box?

• 3.26 meters per second squared

• 1.63 meters per second squared

• 0.326 meters per second squared

• 0.163 meters per second squared

What is the initial velocity of the boxes when starting to push them?

• 5 meters per second

• 0 meters per second

• 2 meters per second

• 10 meters per second

How much total time is required to push all 10 boxes across the room?

• 7.83 seconds

• 10 seconds

• 78.3 seconds

• 100 seconds