Calculating Rain Velocity in Different Reference Frames for a Traveling Car

  • Thread starter Thread starter kornkidcrazy
  • Start date Start date
  • Tags Tags
    Physics
AI Thread Summary
A car traveling due east at 35.0 km/h experiences rain falling vertically, creating an angle of 55.0° with the vertical on the windows. To solve for the rain's velocity in different reference frames, the first step is converting the car's speed from km/h to m/s, resulting in approximately 9.72 m/s. The problem involves applying trigonometry to determine the rain's horizontal and vertical components based on the given angle. A diagram can help visualize the relationship between the car's velocity and the rain's trajectory. Understanding these components will lead to calculating the rain's velocity relative to both the car and the Earth.
kornkidcrazy
Messages
3
Reaction score
0
A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 55.0° with the vertical. Find the velocity of the rain with respect to the following reference frames.



1. the car : ___m/s
2. the Earth: ___m/s



I don't know how to solve this problem. I am bad at physics and I can't find any formulas to save me. If some could help walk me through it, help me, or point me in the right direction, that'd be great. Thanks.
 
Physics news on Phys.org
first need to convert units from km/h to m/s. Then it is all trigonometry. Draw yourself a diagram and label you knowns and unknowns. Post what you come up with.
 
Ok, I converted 35km/h to m/s and I got 9.72222223. And I know the angle is 55 degrees. So, if I draw a triangle, I would label the angle between the hypotnues and adjacent 55 right?
I'm not sure what I am really supposed to draw or how I can convert 9.72222223 into the velocities I need.
 
Like, what formulas do I use to find the velocity in this problem?
 

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 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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

Frame of reference question: Car traveling at the equator
3
Replies
126
Views
10K
Finding the velocity of a car in a different frame of reference
Replies
3
Views
1K
Classic rain falling on a car's window problem doubt
Replies
2
Views
4K
Momentum in different referance frames
Replies
6
Views
2K
Velocity of Raindrops: Car & Earth Reference Frames
Replies
9
Views
7K
Velocity of rain in different reference frames
Replies
1
Views
2K
Find the velocity of the rain drops with respect to the man?
Replies
4
Views
2K
What is the velocity of raindrops in two reference frames?
Replies
2
Views
4K
Thoughts Experiment about Frame of References
Replies
2
Views
1K
Relative Motion Question Involving Rain and Moving Car
Replies
3
Views
13K

Hot Threads

Recent Insights

Back
Top