{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# 2 - 2.4 Constant Acceleration Objects falling under the...

This preview shows pages 1–2. Sign up to view the full content.

2.4. Constant Acceleration Objects falling under the influence of gravity are one example of objects moving with constant acceleration. A constant acceleration means that the acceleration does not depend on time: Integrating this equation, the velocity of the object can be obtained: where v 0 is the velocity of the object at time t = 0. From the velocity, the position of the object as function of time can be calculated: where x 0 is the position of the object at time t = 0. Note 1 : verify these relations by integrating the formulas for the position and the velocity. Note 2 : the equations of motion are the basis for most problems (see sample problem 7). Sample Problem 2-8 Spotting a police car, you brake a Porsche from 75 km/h to 45 km/h over a distance of 88m. a) What is the acceleration, assumed to be constant ? b) What is the elapsed time ? c) If you continue to slow down with the acceleration calculated in (a) above, how much time would elapse in bringing the car to rest from 75 km/h ? d) In (c) above, what distance would be covered

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern