Acceleration and velocity when time and distance are known

AI Thread Summary
The discussion revolves around a physics problem involving a car's motion with constant acceleration on a straight highway. Key points include the need to determine the time and distance during the acceleration phase, as well as the top speed achieved. Participants emphasize the importance of attempting to solve the problem independently before seeking help, suggesting that this approach enhances learning. The conversation also notes that the question should be categorized under homework help for better guidance. Overall, the focus is on applying physics principles to solve the problem effectively.
jumbo
Messages
1
Reaction score
0
A physics student is taking a car for a joy ride on a long, empty and perfectly
straight Saskatchewan highway. At the beginning of the joy ride the student has the
car accelerate from rest to some top speed with a (constant) acceleration of 4:50 m=s2
and then maintains that top speed to the end of the ride. The total time taken from
the start of the joy ride to its end is 1:36 minutes and the total distance covered is
3:84 km.
(a) What was the time elapsed during the acceleration phase of the car's motion?
(b) What distance did the car cover during the acceleration phase of its motion?
(c) What was the top speed reached by the car?

Please help. tell me which dervived formula you used!
 
Physics news on Phys.org
Welcome to Physics Forums !

Firstly, this should be moved to homework help section, because it seems like a hometask problem.
Secondly, you should post your ideas and approach to the solution of the problem, because its a lot better if you can solve it yourself with a little bit of help from us rather than we giving you the answer right away.

It actually took me a tad to realize how to solve this problem. But once you put the pieces together, the problem solves beautifully. Thats why I would like you to try yourself at first.
 
Hi there, im studying nanoscience at the university in Basel. Today I looked at the topic of intertial and non-inertial reference frames and the existence of fictitious forces. I understand that you call forces real in physics if they appear in interplay. Meaning that a force is real when there is the "actio" partner to the "reactio" partner. If this condition is not satisfied the force is not real. I also understand that if you specifically look at non-inertial reference frames you can...
I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
Back
Top