Understanding Velocity and Acceleration: Conceptual Problems Explained

Thread starter Jngo22
Start date Feb 27, 2009
Tags

Conceptual

AI Thread Summary

When a car travels at a constant speed up a hill, passengers feel heavier due to the combined effects of gravitational force and the incline. An object can indeed have increasing velocity while experiencing decreasing acceleration, as acceleration refers to the rate of change of velocity. This scenario occurs when an object is slowing down its rate of acceleration while still moving faster. Understanding these concepts is crucial for grasping the principles of motion in physics. The discussion emphasizes the importance of clarifying these fundamental ideas for better comprehension.

Feb 27, 2009

Jngo22

If a car is traveling at a constant speed up a hill, do you feel lighter, heavier, or the same

Can an object have increasing velocity and decreasing acceleration

Physics news on Phys.org

Feb 27, 2009

tiny-tim

Science Advisor

Homework Helper

Welcome to PF!

Hi Jngo22! Welcome to PF!

Show us what you've tried, and then we'll know how to help!

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'

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 »

Thread 'Explain this asphalt sheen'

This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is The second part of the problem is exactly why you get this affect. And one more spoiler:

View full post »