Archive for the 'Physics' Category

How long does it take the second car to overtake the first car?

Monday, November 17th, 2008
car
Emily J asked:


A car starts from rest and accelerates uniformly at 3.0 m/s2. A second car starts from rest 6.0 seconds later at the same point and accelerates uniformly at 5.0 m/s2. How long does it take the second car to overtake the first car?

Cars
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Posted in Physics | 3 Comments »

Why will nuclear fission never be used directly for powering automobiles?

Sunday, November 9th, 2008
automobiles
Julia asked:


And how could it be used indirectly?

Cars
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Posted in Physics | 5 Comments »

How does the Doppler Effect measure the speed of automobiles?

Tuesday, October 21st, 2008
automobiles
Britny R asked:


I have to do a report over the uses of the Doppler effect, and in doing research, I have found that it can be used to measure automobile speed. But, I can’t seem to find anymore information on it. Please feel free to help if you can.

Cars
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Posted in Physics | 1 Comment »

Why will nuclear fission probably not be used directly for powering automobiles?

Saturday, October 18th, 2008
automobiles
. asked:


How could it be used indirectly to power automobiles?

Cars
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Posted in Physics | 12 Comments »

How the car overtakes a bike when both are travelling at a same speed?

Friday, October 17th, 2008
car
asama asked:


I want to know how the car overtakes a bike even when both are traveling at a same speed.I will put my question in a easier way.

Ex:A bike and car travels at 60mph starting at the same point and time . My question is whether both will reach 60miles after one hour simultaneously?. I know obviously car will reach faster than bike. Whats the reason behind this ??

Kindly answer my question.

Cars

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Posted in Physics | 6 Comments »

How could automobiles be powered by nuclear fission indirectly?

Sunday, October 12th, 2008
automobiles
Christina C asked:


Help with science homework!
How could automobiles be powered by nuclear fission indirectly?
How come they cannot be powered indirectly?

Cars
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Posted in Physics | 4 Comments »

Suppose a car can accelerate at 1m/s2. How large a break in traffic is needed to enter a highway where cars?

Wednesday, October 1st, 2008
car
Vivian C asked:


Suppose a car can accelerate at 1m/s2. How large a break in traffic is needed to enter a highway where cars are moving a 20m/s if the drive wants to avoid forcing the next car to slow down or to approach closer than 25m?

Cars
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Posted in Physics | 2 Comments »