Equations of linear motion in terms of films

AI Thread Summary
The discussion focuses on assessing the scientific accuracy of a scene from the film "Speed," specifically the bus jump over a gap. The user has calculated the bus's speed at 28.87 m/s and the jump distance at 16.66 m, estimating the launch angle at 45 degrees. They seek guidance on how to determine if the jump is feasible using equations of linear motion. Suggestions include estimating the height difference between the takeoff and landing ramps and reconsidering the launch angle. The goal is to analyze whether the bus can successfully clear the gap based on these calculations.
tonto995566
Messages
4
Reaction score
0

Homework Statement



I have been asked to investigate whether Hollywood is scientifically accurate. I decided to use a clip from speed where the bus jumps that hole in the road. I have worked out the speed in m/s from the dial on the bus (67mph = 28.87m/s) and the distance from what the guy says (50 feet which i worked out to be 16.66M) and I've estimated the angle at 45 degrees.

Homework Equations


I think the equations of linear motion are neccisary


The Attempt at a Solution



This is where i need help. As this is my own designed task, of which everyones will be different: i am a bit unsure about where to go next...I know that i want to prove whether it is accurate or not but how...maybe someone could help :D. I would prefer if you didnt answer this just started it off so i knew where i was heading...ty :D
 
Physics news on Phys.org
You have how far away the landing ramp is. Could you estimate the height difference between the take off and landing ramp. Also I think 45 degrees is a bit steep, you may want to have another look at that.

Once you're happy with all of the above you will have to work out whether the bus launching at that speed from a ramp of whatever angle will be able to traverse the 50 foot gap in the way you would normally deal with a question of this type.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top