b. Read the friction force and then calculate the weight of the girl. c. Repeat (a) and (b) for other objects and construct a table like the one shown below: Mass of Object (kg) Applied Force (N) Friction (N) Weight of Object = Normal Force 40 150 50 200 80 250 100 300 150 400 d. Plot a graph of Friction vs. Normal Force and find the slope of the graph. e. What does the slope of the graph represent? f. what is the unit of the slope, if any? g. Challenge Question: What is the mass of the gift box? Explain how you got your answer. Part II (Acceleration): Click on the Acceleration Tab and check all the boxes in the upper right hand corner (Forces, Sum of Forces, Values, Masses, Speed, and acceleration). Don't change the friction scale shown on your screen a. Place 50 kg box on the screen. The screen should look like: Type in the box for the applied force 150 N and calculate the time it will take for the box to go to the maximum speed. The maximum speed is reached when the hand on the speedometer cannot go any further