Part 1: Force, Mass, Acceleration, and the Slingshot An analysis of the video fr
ID: 1474328 • Letter: P
Question
Part 1: Force, Mass, Acceleration, and the Slingshot
An analysis of the video from the projectile motion lab was used to determine the information in the table below from two different launches using two different balls, a red one (600 g) and a blue one (800 g).
1. Using Newton’s 2nd law, determine which ball was used in launch 1 and launch 2. Explain your answer, again using Newton’s 2nd law.
2. Assuming the relative height of projection and angle of projection are the same for launch 1 and launch 2, determine which one achieved the greatest range. Explain your answer.
Part 2: Work and Power in Stair Sprinting
Each student will perform a sprint up the staircase in the Special Events Center.
Measure the height of one step (the height should be the same for each), and count how many steps there are in the staircase. The height of the steps is 17 CENTIMETERS and the there were 18 STEPS.
Each sprint must be timed to the nearest 100th second.
Each student should perform more than one trial; use the best time for the assignment below.
1. Each student is to calculate his/her own work performed in joules and power output in watts. Show all formulae used and calculations performed.
2. Compare results to at least one other student in your group. Explain any similarities or differences between work and power values.
Variable Launch 1 Launch 2 Length Slingshot was Stretched for launch 2.4 m 2.4 m Projection Velocity 24.7 m/s 28.2 m/s Time from slingshot release to start of ball flight 0.151 s 0.117 sExplanation / Answer
We know due to Newton's 11nd Law ,
Force = Mass * Acceleration
Now Force provided by Slingshot is same in both the case..
We can say Acceleration is inversely proprtional to Mass.
Higher The Mass, Less the acceleration.
And Less acceleration means less Launch velocity .
Therfore -
Launch 1 = 800 g Ball
Launch 2 = 600 g Ball
Range os given by - R = vo^2 * sin(2*theta) / g
Where theta is the Launch angle
We can clearly see, Range is Directly Proportional to Launch Velocity.
As the velocity of 600g Ball is more, Therefore it will have higher Range.
Please post seperate questions in seperate post.