Chemistry

posted by .

Calculate your Kinetic Energy in Joules if you weigh50 kg and you are walking 2 meters/second.
This is what I did:
Ep=50kg x 9.8m/s^2 x 2m/s = 980 Joules.
What do I do next?

  • Chemistry -

    KE is 1/2 m v^2 Where is your 1/2 ? Why do you have g in the equation? Now point of fact,your mass is 50 kg, that is NOT what one "weighs".

  • Chemistry -

    Wait so I'm confused, the formula for KE is Ek=1/2mv^2
    So it would be Ek=1/2(50kg) x 2m/s
    Then I convert kg to pounds. There are .454kg in 1 lb so 50(.454)=22.7lbs
    Ek=1/2(22.7lbs)(2m/s) = 22.7
    Then what??

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A bullet weighing 235 grains is moving at a speed of 2.52 X 10^3 ft/s. Calculate the kinetcic energy of the bullet in joules ahd in calories. One grain equals 0.0648 g. Can someone help me out on this please K. E.= 1/2 mv2 . Convert …
  2. ALGEBRA - Proportional

    The velocity ( v meters per second ) of a body is known to be proportional to the sqaure root of it's kinetic energy ( e ejoules). When the velocity of a body is 120m/s it's kinetic energy is 1600J. Write down the relationship between …
  3. physics

    GSM networks use microwaves of 20 cm in wavelength. The energy carried by one trillion (1012) photons of this wavelength is closest to ... a. 10^-16 Joules b. 10^-15 Joules c. 10^-14 Joules d. 10^-13 Joules e. 10^-12 Joules
  4. Physics

    GSM networks use microwaves of 20 cm in wavelength. The energy carried by one trillion (1012) photons of this wavelength is closest to ... a. 10^-16 Joules b. 10^-15 Joules c. 10^-14 Joules d. 10^-13 Joules e. 10^-12 Joules
  5. Chemistry

    Kinetic energy is calculated from the formula KE = (1/2)mv2. Suppose a mass of 14.2 kg (m = 14.2 kg) is moving with a velocity of 750. ms-1 (v = 750. meters per second). Calculate the kinetic energy of this mass in units of Joules.
  6. Chemistry

    Calculate your Kinetic Energy in Joules if you weigh50 kg and you are walking 2 meters/second. This is what I did: KE is Ek=1/2mv^2 So it would be Ek=1/2(50kg) x 2m/s Then I convert kg to pounds. There are .454kg in 1 lb so 50(.454)=22.7lbs …
  7. Chemistry

    Calculate your Kinetic Energy in Joules if you weigh50 kg and you are walking 2 meters/second. This is what I did: KE is Ek=1/2mv^2 So it would be Ek=1/2(50kg) x 2m/s Then I convert kg to pounds. There are .454kg in 1 lb so 50(.454)=22.7lbs …
  8. Physics

    Mason lifts a box off the ground and places it in a car that is 0.50 meters high. If he applies a force of 8.0 newtons to lift this suitcase, what is the work done?
  9. Physics

    In a horizontal spring-mass configuration, the position of the 0.52 kg mass is described by [x = (1.09 m) sin(2.70t)] a) What is in meters the amplitude of these oscillations?
  10. physics

    In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.2 kilograms vertically downward, then what is the kinetic …

More Similar Questions