What is the momentum of an automobile (weight = 9800N) when it is moving at 35 m/s to the south?


Posted February 28th, 2010 by admin 1 Comment »
automobile
HGA asked:


What is the momentum of an automobile (weight = 9800N) when it is moving at 35 m/s to the south?

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Posted in Physics | 1 Comment »

What is the next evolution in personal transportation beyond the automobile and when?


Posted January 7th, 2010 by admin 3 Comments »
automobile
skahhh asked:


We Americans are stuck on the automobile. We want to make it more fuel efficient, but when we do, we can’t carry or tow anything in it! Does somebody have something on a drawing board, at least that is gonna get us what we need, beyond just moving our own bodies around? A transporter perhaps?

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Posted in Other - Cars & Transportation | 3 Comments »

Two cars that have the same mass are moving around a circular track at the same constant speed?


Posted September 16th, 2009 by admin 4 Comments »
cars
n asked:


The track is perfectly level. If car 1 is at the inner edge of the track and car 2 is at the outer edge, then

1) the frictional force on car 1 is less than the frictional force on car 2.
2) the frictional force on car 1 is greater than the frictional force on car
3) the frictional forces on both cars are equal and greater than zero.
4) the frictional forces on both cars are zero.

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Posted in Physics | 4 Comments »

What cars are best for Denver winter driving?


Posted February 18th, 2009 by admin 3 Comments »
cars
Robin K asked:


I am moving from Houston to Denver and want to know what types of cars (not SUVs, trucks, etc) are best from driving there due to the snow and ice. I won’t be driving up into the mountains, just in and around the city. I love Toyota and Honda’s but have heard AWD is best for snow. Is this true with the type of winter that Denver has? Thanks!

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Posted in Safety | 3 Comments »

If two similar cars have different tyres circumference, would it give different speedometer readings?


Posted February 18th, 2009 by admin 4 Comments »
cars
h_seabird2000 asked:


If I have two Toyota Land Cruisers, one has the original tyres, and the other have larger scale circumference tyres, would the two cars be moving in paralel at the same speedometer reading?

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Posted in Maintenance & Repairs | 4 Comments »

What is the speed of two railroad cars after they collide?


Posted January 31st, 2009 by admin 2 Comments »
cars
finding.4ever asked:


A railroad car of ams m is moving at speed v when it collides with a second railroad car of mas M which is at rest. The two cars lock together instantaneously and move along the track.

What is the speeed of the cars immediatly after the collision?

How would you find it?

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Posted in Physics | 2 Comments »