Question

A 15000 N automobile travels at a speed of 45 km/h northward along a street, and a 7000 N sports car travels at a speed of 62 km/h eastward along an intersecting street.

(a) If neither driver brakes and the cars collide at the intersection and lock bumpers, what will the velocity of the cars be immediately after the collision?

magnitude? km/h

direction ? ° (counterclockwise from due east)

(b)What percentage of the initial kinetic energy will be lost in the collision?

Answer 1

Weight =mg

So mass =W/g

Mass of automobile ,

Initial speed of automobile,

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Mass of sports car,

Initial speed of sports car,

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During collision momentum is conserved

initial momentum =final momentum

ANSWER:

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Direction

ANSWER: Counter clockwise from due East

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(b)What percentage of the initial kinetic energy will be lost in the collision?

Initial Kinetic energy,

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Final Kinetic energy,

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Percentage of the initial kinetic energy lost,

ANSWER:

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