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1. ### Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum?

...centripetal force (mv² / r) So .. μ.mg = mv² / r .. .. v = max speed for the max grip (μ.mg) v = √(rμg) .. .. .. √(84.0m x 0.42 x 9.80) .. .. ►v(max) = 18...

1 Answers · Science & Mathematics · 11/11/2011

2. ### How much time is needed for a car to accelerate...?

a = (v2 - v1) / t t = (v2 - v1) / a v2 = 21.9m/s v1 = 8.7m/s a = 3m/s2 so t = (21.9 - 8.7) / 3 t = 4.4s Hope this helps.

3 Answers · Science & Mathematics · 13/12/2010

3. ### What are units of speed?

Hi, gorgeous! Unit of speed = Unit of length / Unit of time Therefore, the only units for speed from your list are: meters/sec cm/sec miles/hour km/minute Hope this helps! :)

3 Answers · Science & Mathematics · 16/09/2012

4. ### Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum?

...something wrong. Let's anaylse the answer to this problem: units for speed: m/s units for: sqrt(ugr) sqrt(m/s² m) - the coefficient has...

2 Answers · Science & Mathematics · 25/01/2009

5. ### Speed/Distance/Time Explanation Needed?!?

question is based on constant speed formula for distance(d), speed(V) and time(t). d = (V)(t) Let's say...

1 Answers · Science & Mathematics · 08/03/2012

6. ### Physics help needed for midterm preparation!!!!?

... = 0.07•112kg•9.8m/s² = 76.8 N For tackle, Ff = 0.1•50kg•9.8m/s² = 49 ...39;s forward motion. Therefore Hunter needs to exert F = 125.8 N (assumes the...

1 Answers · Science & Mathematics · 27/01/2011

7. ### What are the formulas for average speed?

... and, in doing that, understand the physics. average speed V = distance traveled S divided by the time T...

4 Answers · Science & Mathematics · 29/03/2011

8. ### PHYSICS QUESTION: What would be the least speed needed for the rest of the trip to arrive in time for the interview? (Details below)?

...3:15-2:06 =01:09 146km/69min = 2.116km/min = 127 kph Add an update if you need more explanation, and please choose a best answer from among those you get.

1 Answers · Science & Mathematics · 28/01/2016

9. ### How much time is needed for a car to accelerate from 8.4 m/s to a speed of 16 m/s if the acceleration is 2.4?

V=u+at [v-final velocity u-initial velocity a-acceleration t-time] v=u+at v-u=at 16-8.4=2.4t 2.4t=7.6 t=7.6/2.4 t=3.17

5 Answers · Science & Mathematics · 17/02/2011

10. ### How much time is needed for a car to accelerate from 8.0 m/s to a speed of 22 m/s if the acceleration is 3.0 m

wow some people don't even try.

6 Answers · Science & Mathematics · 27/04/2007