Use the simulation to help you complete the question. This question has two parts. Open the simulation with the link below, and choose acceleration. https://phet. colorado. edu/sims/html/forces-and-motion-bas ics/latest/forces-and-motion-basics _en. html Use just one object like the box.
Set the FRICTION slider to NONE.
Check the boxes to show values, speed, and acceleration.
Move the force slider at the bottom to the right or the puppet to the right to start moving the box, then after the box is moving a little bit, release the force slider or the puppet so that the puppet is no longer pushing the box. Notice that after the puppet stops pushing the box the speed stays constant and the acceleration is zero.
15a) Use Newton's Laws to explain what is happening to the box when the puppet is pushing it.
15b) Use Newton’s Laws to explain why the speed stays constant and the acceleration is zero after the puppet stops pushing the box.