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Two cars are involved in a head-on collision in an alley. The driver of a car with mass,
ma = 1,200 kg claims to have been traveling west at via = 7 m/s. The driver of the
other car with mass, mb = 1,000 kg claims to have been traveling east at vib = 10
m/s. The investigating officer found that both cars were stuck together and traveled
with a common final velocity after the collision.
Which direction would they be moving after the collision?
west
east
north
no direction/ not moving

Respuesta :

Answer:

The correct assumption of the given situation is required.

The correct option is

Either the driver of the westbound car overestimated his velocity or the driver of the eastbound car underestimated his velocity,

= Mass of west moving car = 1200 kg

= Mass of east moving car = 1000 kg

= Velocity of west moving car = -7 m/s

= Velocity of east moving car = 10 m/s

v = Combined velocity of the cars = 3 m/s

From the conservation of momentum we get

So, either westward (  ) moving car needs to have more velocity or eastward () moving car needs to have less velocity.

Since, mass is constant only the velocity can be different.

The correct option is

Either the driver of the westbound car overestimated his velocity or the driver of the eastbound car underestimated his velocity.

Explanation:

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