Physical Science

posted by Jinja

How do you find the mass if they give you the joules and the velocity? Please help me! I'm really confused...

  1. Damon

    I guess the energy is all kinetic here?
    (1/2) m v^2 = Energy in JOules
    so
    m = 2*joules of energy / v^2

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Motion equation

    I assume that is 5.5 m/s, the initial velocity. Ok, assuming that, then you know the initial KEnergy; 1/2 .62 (5.5)^2 joules. At the max height, the KE you are given is KE from horizontal motion. So subtract that amount (2.3J) from …
  2. Science

    My physical science class is doing an experiment on the mass of pennies. I hypothesized that newer pennies would have less mass because cheaper materials are being used. I found that before 1982, pennies were made from 95% copper/5% …
  3. physical science

    a force used to lift a 12-kilogram mass to a height fo 8 meters in 2 seconds does 1040 joules of work. how much force is used.
  4. physical science

    17. In the Mass in Motion lab, you rolled a ball down a ramp to see how far it moved a cup. What did this experiment demonstrate?
  5. Physical Science

    How much work is needed to lift an object with a mass of 51.0 kg to a height of 2.00 meters?
  6. Physical Science

    How do you get the velocity of a roller coaster when you are only given 250.0kg and 2.000x10^4 Joules
  7. physical science

    19. (2 points) Ball 2, with a mass of 30kg, is moving to the left at 10m/s. With what velocity should Ball 1, with a mass of 10kg, move to the right and collide with Ball 2, so that Ball 1 rebounds with a velocity of 30m/s, and Ball …
  8. science

    A person drive an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a velocity of 30 meters per second. The difference in the automobile's kinetic energy is how many joules?
  9. science

    Calculate the kinetic energy in joules of a body of mass 30kg at a velocity of 3ms-1
  10. Physical science b

    The mass of ball A is 10kg and the mass of ball B is 5kg. If the initial velocity is set to 3 meters per sec for each ball, what is the final velocity of ball B if the final velocity of ball A is 2 meters per second?

More Similar Questions