Physics

posted by .

During a free kick at a soccer playoff game a 0.7 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 39.8 J. How fast was the ball booted by the player on the field?

  • Physics -

    keinitial+PE initial=kepeak+PEpeak
    keinitial+0=39.8+.7*g*14.7
    1/2 m v^2=39.8+.7*g*14.7
    solve for v

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A football kicker lines up to kick a game winning kick. The goalpost is 30m away and the ball must clear the 3.3m high cross-bar. If the kick leaves his foot at an angle of 35 degrees, how fast must the kick be to clear the bar?
  2. curriculum development

    Katie is two years old. it is probable that she can: A. flex her leg and kick a ball. B. push against the ball,but not really kick it. C. kick a ball with a straight leg. D. kick a ball with her leg and have arm opposition. I chosed …
  3. physics

    A 0.5 kg soccer ball is kicked with a force of 50 Newtons for 0.2 sec. The ball was at rest before the kick. What is the speed of the soccer ball after the kick?
  4. Health

    The coach noticed that Caleb really started to kick the soccer ball with great amount of power after the kicking drills. Caleb adjusted the power of his soccer kick by increasing the speed of his kicking leg prior to and upon contact …
  5. Honors Physics

    0.5 kg ball at the peak of the kick 16.6 m above the field had a kinetic energy of 35.4 J. How fast was the ball booted by the player on the field?
  6. Physics

    During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 16.6 m above the field had a kinetic energy of 35.4 J. How fast was the ball booted by the player on the field?
  7. science

    A soccer player applies an average force of 180 N during a kick. The kick accelerates a 0.45 kg soccer ball from rest to a speed of 18 m/s. What is the impulse imparted to the ball?
  8. curriculum development

    katie is two years old it is probable that she can a. flex her leg and kick the ball b. push against the ball but not really kick it c. kick the ball with a straigh leg d. kick a ball and have an arm opposition I chose C
  9. curriculum development

    katie is two years old it is probable that she can a. flex her leg and kick the ball b. push against the ball but not really kick it c. kick the ball with a straigh leg d. kick a ball and have an arm opposition I chose A
  10. Physics

    During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 34.0 J. How fast was the ball booted by the player on the field?

More Similar Questions