Physics

A 13 kg asteroid is traveling through space with velocity v = 110 m/s when it breaks up into three equal pieces. One piece is left at rest, and a second one continues with same velocity. What was the energy of the explosion?

  1. 👍 0
  2. 👎 0
  3. 👁 133
asked by Susan
  1. There are three kinds of people in the world: those who can count, and those who can't.

    1. 👍 0
    2. 👎 0
    posted by Steve
  2. Well it doesn't tell me about the third piece. I'm just stuck on this problem.

    1. 👍 0
    2. 👎 0
    posted by Susan
  3. I don't know how to calculate the energy of the explosion.

    1. 👍 0
    2. 👎 0
    posted by Susan
  4. I got 715 J. Steve, is this right?

    1. 👍 0
    2. 👎 0
    posted by Susan
  5. first conserve momentum

    13*110 = (13/3)(0)+(13/3)110 +(13/3)v

    3*(13/3) *110 = 0 + (13/3)110 + (13/3)v

    2 *110 = v

    v = 220 :)

    Now do energy

    1. 👍 0
    2. 👎 0
    posted by Damon
  6. Ah, I see, thank you! I got 314600 J is that right? I did 1/2*m*v^2.

    1. 👍 0
    2. 👎 0
    posted by Susan
  7. energy before = (1/2)13(110)^2 = 78,650 Joules

    energy after = (1/2)(13/3)(110)^2 +(1/2)(13/3)(220^2)

    1. 👍 0
    2. 👎 0
    posted by Damon
  8. So I got 131083.33 J. Is that correct?

    1. 👍 0
    2. 👎 0
    posted by Susan
  9. (1/2)(13/3)(110^2 +220^2) - (1/2)(13/3)(3) (110)^2

    = (1/2)(13/3) (110^2 + 220^2- 3*110^2)

    = 51,480 I got

    1. 👍 0
    2. 👎 0
    posted by Damon
  10. correction 52,433

    1. 👍 0
    2. 👎 0
    posted by Damon
  11. Now finish the other problem.

    1. 👍 0
    2. 👎 0
    posted by Damon

Respond to this Question

First Name

Your Response

Similar Questions

  1. PHS 105

    At a particular instant, two asteroids in inter-stellar space are a distance r = 20 km apart. Asteroid 2 has 10 times the mass of asteroid 1, m2 = 10 m1. 1. If the acceleration of the asteroid 1 toward the asteroid 2 is 1.0 m/s2 ,

    asked by Mel on March 17, 2014
  2. Physics

    In deep space, a small rock orbits an asteroid. The circular, orbit radius is 1037m and the velocity of the rock is 8.02m/s. Find the mass of the asteroid.

    asked by Jenny on May 26, 2015
  3. physics

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3740-kg space tug and a 6500-kg asteroid. They pull on the asteroid with a force of 470 N. Initially the tug and the asteroid are

    asked by lizz on March 1, 2011
  4. Physics

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3140-kg space tug and a 5050-kg asteroid. They pull on the asteroid with a force of 589 N. Initially the tug and the asteroid are

    asked by Dot on September 16, 2016
  5. Physics

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3830-kg space tug and a 5930-kg asteroid. They pull on the asteroid with a force of 671 N. Initially the tug and the asteroid

    asked by Amelia on October 9, 2017
  6. Physics

    In deep space, a small rock orbits an asteroid. The circular, orbit radius (between their center of masses) is 1037 m and the velocity of the rock is 8.02 m/s. Find the mass (kg) of the asteroid. G=6.67x10^-11 m^3/kgs^2. I got

    asked by Sansa Stark on May 24, 2015
  7. physics

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3580-kg space tug and a 6000-kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially

    asked by Desi on February 17, 2016
  8. physics

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3640 kg space tug and a 6500 kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially

    asked by phillip on November 1, 2010
  9. Physics

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3360-kg space tug and a 6300-kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially

    asked by Bonmoun on September 30, 2014
  10. p``

    At a time when mining asteroids has become feasible, astronauts have connected a line between their 3640 kg space tug and a 6500 kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially

    asked by megan on November 1, 2010

More Similar Questions