Question

Part I - Newton's First Law Make sure the boxes that say “Force” and “Speed” are checked. a. Apply a force of 50 N right to the box. Describe the motion of the box using physics terms (i.e. velocity, acceleration, displacement). Refer to the speedometer in your answer. b. Reset the scenario (don't forget to check force, speed again). Apply a force of 50 N to the right for about 5 seconds then reduce the applied force to zero (the man should stop pushing). Don't reset the scenario. Describe the motion of the box. Refer to the speedometer in your answer. c. Apply a force of 50N to the left. Describe the motion of the box. d. Explain the exact steps needed to make the box come to a stop.

Answer 1

A.

An unbalanced 'Applied' force cause the box to start moving and the speed to increase over time, or 'Accelerate'.

B.

When the force has removed, the box kept moving, but it no longer accelerated, it keep moving in a straight line at a constant speed or velocity, as no force is needed to keep it moving.

C.

An unbalanced force to the left caused the box to accelerate towards left. The force then had negative value of -50N.

D.

When the box has moving towards the left, a force had to be applied to the right. This unbalanced force caused the box to slow down and then eventually stop it. Because the velocity was negative and the acceleration is positive. The box has slowed down.