Question

A frizetto Clearingho " P Pandora ® nhanow certification BillFlash Statements-Amazonjobs General Physics I- Morning section- Spring 2019 <Ch. 9 Hmwrk Multiple Choice Question 9.24 Review I Constants | Penodic Table Part A Curling is a sport played with 20 kg stones that slide across an ice surface. Suppose a curling stone sliding at 2.5 m/s strikes another stone and comes to rest in 2 ms Approximately how much force is there on the stone during the impact? O 1250 N O 2500 N 12500 N 25000 N Submit Provide Feedback

Answer 1

Solution: Let's first determine the deceleration acting on the stone. We have: * Initial speed: u-2.5 m/s Final speed: v 0 (Since rest) * Time taken t-2 ms-2 10-3 s From first equation of motion: u=u+at v-u 0-2.5 m/s 2 × 10-3 s- 1.25 × 103 m/s2 a = 1.25 × 103 m/? Magnitude : Now Force (1.25 × 103 rn/s*) = 25000 N F = m a = 20kg