Can you explain Automobile Kinematics?

Thread starter Dhenusha
Start date Apr 8, 2019
Tags

Automobile Kinematics

Apr 8, 2019

Dhenusha

Homework Statement: An impatient motorist considers speeding as he travels between two cities. If the trip normally takes
2.80h at an average speed of 100km/h, how much time will be saved if he exceeds the speed limit by
10.0km/h?

Relevant Equations: During a short interval of time the velocity, v, in m/s of an automobile is given by


v  at2
 bt3
where the

time t is in seconds. Determine the units of a and b.

im confused

Physics news on Phys.org

Apr 8, 2019

kuruman

Science Advisor

Homework Helper

Education Advisor

Insights Author

Gold Member

I'm confused too. Is what you have under "relevant equations" another problem? If so, you need to post it separately. Also you need to show some effort before you can receive help. Please read the forum rules on homework help.

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 '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 »