At the local hockey rink, a puck with a mass of 0.12 kg is given an initial spee

Question

At the local hockey rink, a puck with a mass of 0.12 kg is given an initial speed of v0= 6.7 m/s. (a) If the coefficient of kinetic friciton between the ice and the puck is 0.13, how much time t does it take for the puck to come to rest? (b) If the mass of the puck is doubled, does the frictional force F exerted on the puck increase, decrease, or stay the same? Explain. (c) Does the stopping time of the puck increase, decrease, or stay the same when its mass is doubled? Explain. (d) For the situation considered in part (a), show that Ft=mv0.

Explanation / Answer

v=at a=uk*g=.13*9.8 a)so t=v/a=6.7/a=5.26 s b) if mass is doubled F doubles . F=Mg*u so if m--->2m then F---> 2F c)time does not chenge because acc=F/m=2F/2M=u*g d)

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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