A 860 kg sports car collides into the rearend of a 2500 kg SUV stopped at a red

Question

   A 860 kg sports car collides into the rearend of a 2500 kg SUV stopped at a red light. The bumperslock, the brakes are locked, and the two cars skid forward 2.8mbefore stopping. The police officer, estimating thecoefficient of kinetic friction between the tires and road to be0.65, calculates the speed of the sports car at impact.    What was that speed? Please show all steps.    A 860 kg sports car collides into the rearend of a 2500 kg SUV stopped at a red light. The bumperslock, the brakes are locked, and the two cars skid forward 2.8mbefore stopping. The police officer, estimating thecoefficient of kinetic friction between the tires and road to be0.65, calculates the speed of the sports car at impact.    What was that speed? Please show all steps.

Explanation / Answer

Translational KE did work against friction as it slides adistance 2.8m. So use 1/2MV2=f*D 1/2(860000g)V2=(.65g)(2.8m) V=0.002057m/s Hope it was helpful

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.