Projectile Motion (No initial velocity)

AI Thread Summary
To determine the minimum initial speed for a salmon to reach a 0.55 m tall waterfall from a distance of 2.00 m at a 32.0-degree angle, the relevant projectile motion equation is Δy = vi sin(Θ) Δt + 1/2 g Δt². The user has attempted various formulas but is struggling to reconcile their results with those from a graphing calculator. Clarification on the specific calculations attempted and the discrepancies noted with the graphing calculator is needed for further assistance. Showing detailed work is essential for effective troubleshooting. Accurate calculations are crucial for solving projectile motion problems.
th7172
Messages
2
Reaction score
0

Homework Statement


A salmon starts 2.00 m from a waterfall that is 0.55 m tall and jumps at an angle of 32.0. What must be the salmon's minimum initial speed to reach the waterfall.


Homework Equations


\Deltay=visin\Theta\Deltat+1/2g\Deltat2

The Attempt at a Solution


I have tried all the related formulas for projectile motion, and I felt like I got somewhere a few times. But the results aren't really checking with a graphing calculator.
 
Physics news on Phys.org
You need to show your work in order to get help here.

What have you tried so far? And what exactly does the graphing calculator not agree with?
 

Thread 'Errors and significant figures'

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...
View full post »
Thread 'A cylinder connected to a hanging mass'

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...
View full post »

Similar threads

projectile motion problem with no initial velocity given
Replies
3
Views
659
Projectile Motion (No initial velocity)
Replies
1
Views
5K
How Do You Solve a Projectile Motion Problem?
Replies
3
Views
4K
Projectile Motion: Salmon Jumping a Waterfall - Calculating Minimum Speed Needed
Replies
2
Views
2K
How Long to Reach Maximum Height for a 70 m/s Projectile at 45 Degrees?
Replies
5
Views
2K
Projectile Motion Experimental Error
Replies
1
Views
2K
How Do You Calculate Minimum and Maximum Velocities in Projectile Motion?
Replies
7
Views
2K
Projectile Motion: initial velocity problem
Replies
1
Views
1K
2 Projectiles are fired simultaneously
Replies
3
Views
2K
Relationship between Launch height and range of a projectile
Replies
15
Views
25K

Hot Threads

Recent Insights

Back
Top