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3 years ago

10

A 1200 kg car is moving at 5.0 m/s east. it strikes an 1800 kg car at rest. the cars have an elastic collision and move in the e

ast or west direction. the velocity of the 1200 kg car after the collision is:

1 answer:

spayn [35]3 years ago

5 0

Velocity = (1200*5)/(1200+1800)=2

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A plane has an airspeed of 142 m/s. A 30.0 m/s wind is blowing southward at the same time as the plane is flying. What must be t

const2013 [10]

Answer:

$\theta=12.19^{\circ}$

Explanation:

Given that

The speed of the airplane ,v= 142 m/s

The speed of the air ,u = 30 m/s

Lets take angle make by airplane from east direction towards north direction is θ .

Now by using diagram ,we can say that

$sin\theta =\dfrac{u}{v}$

Now by putting the values in the above equation we get

$sin\theta =\dfrac{30}{142}$

$sin\theta=0.21$

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HELP PLEEAAAASSSEEEEEEE What is the definition of net force?

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the sum of all force being applied to an object.

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