Curling is a sport played with 20 kg stones that slide across an ice surface. Suppose a curling stone sliding at 1 m/s strikes another, stationery stone and comes to rest in 2 ms. Approximately how much force is there on the stone during the impact? A. 200 N B. 1000 N C. 2000 N D. 10,000 N

Question

Lakisha Archer · Accepted Answer

Givens: m=20 kg △t=2 ms=2×10−3 s vi=1.0 ms vf=0 ms J=△p=mvf−mvi F△t=mvf−mvi F=mvf−mvitrainglet=0−(20×1.0)2×10−3=−202×10−3 F=−10000 N Notice, the negative sign becaus the force is opposing the velocity of the stone Result: Choise D