A small model car with mass m travels at constant speed v on the inside of a track that is a vertical circle with radius 5.00 m. If the normal force exerted by the track on the car when it is at the bottom of the track (point A) is equal to 18.1 kN and at the top of the track (point B) is equal to 2.92 kN, what is the speed v of the car?

Q: The edges of a shoebox are measured to be 11.3 cm, 19.4 cm, and 29 cm.

A: Given: length =11.3 cm  Width= 19.4 cm Height = 29 cm

Q: Which of the following equations are dimensiona consistent?

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A: Useful information that will be used, is equivalent to is equivalent to

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Q: Assume it takes 9.00 min to fill a 45.0-gal gasoline tank. (1 U.S. gal = 231 in.) (a) Calculate the…

A: Given: Time taken to fill the tank = 9 minutes The volume of the tank = 45 gal

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Q: Part II. Significant Figures The significant figures in a number are all figures that are obtained…

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Q: Problem 6: The sides of a small rectangular box are measured to be 1.55 + 0.045 cm, 2.1 + 0.025cm,…

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A:

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A: Given that : a. 1.8 x10^6m  b. 0.068 m  c.5.7x10^-10m  d.3.8 x10^4m

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A: Average heart rate = 72 beats /min

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Q: Which one of the following is not a derived unit?    (a) kg/m3   (b) km/hr   (c) m/s2…

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A: (a) Rate in terms of gallons per second Q=Vt=40.0 gal6.95 min60 s1 min=0.0959 gal/s

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.