Motion Lab

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Table Of Contents
PHS 100-552 Lab
Part I: Scenario H Graph……………………………………………… 2 Scenario H Regions and Force Diagrams…………………………….3 Region and Force Diagram Information……………………………...4

Part II: Graph 6 ………………………………………………………….5 Step-By-Step Instruction………………………………………………..6 Regions and Force Diagrams……………………………………………7 Region Information……………………………………………………….8 Newton’s Laws…………………………………………………………… 9

Self-Assessment…………………………………………………..……..10

Scenario H

You are stopped at a stop sign. Your friend pushes your car forward at an increasing velocity for two seconds. She then pushes your car for three more seconds at a constant velocity. Your friend stops pushing and you immediately apply the brakes for one second, but do not come to a stop.

Regions and Force Diagrams

Graph #6

Step-by-Step Instruction

Regions and Force Diagrams

Region Information

Region A

Region B

Region C

Region D

Region E
The cart remains still for 2.6 seconds 0.7 meters away from the sensor. Net force equals zero. All three graphs show the cart is stationary with a flat line across the 0.7 line. Acceleration graph begins sloping negatively once the force of hand is applied.

After 2.6 seconds the cart is pushed towards the sensor until it reaches 0.2 meters. At this point the power of fan becomes greater than the power of the hand and the cart changes direction. Net force equals Fhand. All three graphs show this movement with a negative sloping and then a positive sloping in Acceleration halfway through Region B which in turn makes velocity slope upwards.

For 3.2 seconds the cart moves away from the sensor until it reaches 1.6 meters. Net force is equal to Ffan. Velocity and Position graphs show this movement with a positive slope. Acceleration graph becomes moderately straight until the cart is about to be stopped towards the end of Region C.

For 0.6…...

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