Instantaneous velocity and time

AI Thread Summary
Instantaneous velocity can indeed be greater than average velocity over a time interval. For example, if a driver travels 50 miles in an hour, their average speed is 50 miles per hour, but they could reach speeds of 100 miles per hour at certain points during the trip. Conversely, instantaneous velocity can also be less than average velocity if the object slows down significantly at some moments. The discussion emphasizes that variations in speed are possible within the constraints of average velocity calculations. Understanding these concepts can be enhanced by graphing position versus time.
stunning
Messages
10
Reaction score
0
can the instantaneous velocity of an object at an instant of time ever be greater in magnitude than the average velocity over a time interval containing the instant?can it ever be less?
 
Physics news on Phys.org
What are your ideas?
Did you try to draw a graph of position vs time?
 
What do you think?
 
wel i think that it can b greater...
 
stunning said:
wel i think that it can b greater...
Of course it can. You drive 50 miles and it takes you an hour, so your average speed is 50 miles/hour. But nothing about that stops you from driving 100 mph for the first mile, and then slowing down. (Or any number of variations, as long as it takes you an hour to complete the trip.
 

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

Calculate Distance Traveled: Instantaneous vs. Average Velocity
Replies
5
Views
2K
Momentum: instantaneous or average?
Replies
9
Views
1K
Conceptual problem in average/instantaneous velocity
Replies
4
Views
2K
Instantaneous speed and velocity
Replies
14
Views
10K
Instantaneous Acceleration Given Equation for Velocity
Replies
7
Views
982
Can instantaneous velocity be different from average velocity?
Replies
11
Views
2K
I Problem in understanding instantaneous velocity
Replies
33
Views
2K
Relation between the velocity vector and the acceleration vector of an object
Replies
1
Views
651
Zero velocity for a time interval, what about acceleration?
Replies
7
Views
2K
Does Instantaneous Velocity Account for Launch Height in Kinematics?
Replies
5
Views
1K

Hot Threads

Recent Insights

Back
Top