What is the speed of car b at the start of the sliding

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In the "before" part of the figure below, car A (mass 1000 kg) is stopped at a traffic light when it is rear-ended by car B (mass 1600 kg). Both cars then slide with locked wheels until the frictional force from the slick road (with a low µk of 0.14) stops them, at distances dA = 8.2 m and dB = 6.1 m.

(a) What is the speed of car A at the start of the sliding?

(b) What is the speed of car B at the start of the sliding?

(c) Assuming that linear momentum is conserved during the collision, find the speed of car B just before the collision.

(d) Explain why this assumption may be invalid.

Reference no: EM13546961

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