Question

Asked Mar 3, 2019

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A 800- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 15.0 km/h in a direction of 35 ^{o} with respect to the positive x axis. The heavier car moves at 18 km/h at -47 ^{o} with respect to the positive x axis.

What was the initial speed of the lighter car (in km/h)?

What was the initial direction (as measured counterclockwise from the x-axis)?

Step 1

From the law of conservation of momentum, the *x* component of the initial speed of the lighter car is,

Step 2

From the law of conservation of momentum, the *y* component of the initial speed of the lighter car is,

Step 3

The initial speed of the...

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