Physics

In the winter sport of curling, players give a 20 kg stone a push across a sheet of ice. A curler accelerates a stone to a speed of 3.0 m/s over a time of 2 s.
a)How much force does the curler exert on the stone?
b)What average power does the curler use to bring the stone up to speed?

  1. 👍 0
  2. 👎 0
  3. 👁 1,172
  1. The acceleration rate while pushing is 3.0/2 = 1.5 m/s^2

    The force required to accelerate the stone at that rate is F = M*a = 30 N.

    This assumes zero ice friction resistance. That is a fairly good assumption, since they travel so far.

    Average power = (kinetic energy added)/(2 seconds)
    = (M/2)Vfinal^2/Time = 45 watts

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.93 m/s. The stone subsequently falls to the ground, which is 17.1 m below the point where the stone leaves your hand. At

    asked by unknwon on October 10, 2014
  2. Science, Physics, math, calculus

    Pool players often pride themselves on their ability to impart a large speed on a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their

    asked by James on November 24, 2013
  3. physics

    While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 11.1 m below the point where the stone leaves your hand. At

    asked by Jordan on September 7, 2015
  4. math

    8 basketball players are selected to play in a special game.the players will be selected from a list of 27 players .if the players are selected randomly ,whats the probability that the 8 tallest players will be selected.

    asked by rency on October 27, 2009
  5. physics

    A spelunker drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.50s after the stone is dropped. How deep is the hole? how can i use the speed of

    asked by ajo on October 6, 2007
  1. physics

    While standing on a bridge 15.0 m above the ground, you drop a stone from rest. When the stone has fallen 3.10 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to

    asked by brittany on January 31, 2010
  2. LIFE ORIENTATION

    FOUR WAYS IN WHICH SPORT CAN SUPPORT NATION BUILDING.2 TWO ISSUES IN SPORT THAT IMPEDE NATION BUIDING.3.WHAT CAN TRIGGER SPECTATOR AGGRESSION IN SPORT.

    asked by MOHLALA on February 6, 2016
  3. Language Arts 7 B

    1. Which question best relates to these details in "Winter". Frog burrow the mud/ snails bury themselves What happen to the frogs in the winter? How do animals differ from people in the winter? Why do snails bury themselves? How

    asked by Kit-Kat on January 30, 2018
  4. Physics

    A curling stone with a mass of 18 kg slides 38m across a sheet of ice in 8.0 s before it stops because of friction. What is the co¨efficient of kinetic friction between the ice and the stone? (Note: you will need to calculate the

    asked by Sarah on October 29, 2015
  5. physics

    A stone with mass m = 2.3 kg is thrown vertically upward into the air with an initial kinetic energy of 190 J. The drag force acting on the stone throughout its flight is constant, independent of the velocity of the stone, and has

    asked by Katie on February 22, 2012

You can view more similar questions or ask a new question.