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A car with a mass of 1400 kg is moving on ice with a constant velocity of 18.0 meters per second what is the cars momentum?
Wiki User
∙ 14y ago
Momentum = (mass) x (speed)
But if mass is in kg, then speed should be in meters per second, otherwise we'll get
a very strange unit for our momentum (kg-mile-sec-1).
1 mile = 1,609.344 meters
18 miles = 28,968.2 meters
Momentum = (1,400) x (28,968.2) = 40,555,468.8 kg-meter per second
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Doing a double-take on the question ... there's got to be a mistake there somewhere.
The car is going " ... 18 miles per second ... ". That's roughly equivalent to the earth's mean
orbital velocity around the sun, and equal to 64,800 miles per hour.
18 miles per hour, or 18 meters per second, would be a lot more reasonable.
But we're only here to answer the question as posted, whether it makes sense or not.
Wiki User
∙ 14y ago
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