Physics

posted by .

a 1kg ball is thrown into the air with an initial velocity of 30 m/sec. how much kinetic energy does the ball have?


-how much potential energy does the ball have when it reaches the top of its ascent?

-how high into the air did the ball travel?

  • Physics -

    Assume potential energy on ground is zero.
    Kinetic energy at 30 m/s
    =(1/2)mv²
    Potential energy at highest point, H from ground
    =mgh
    Equate energies,
    mgh=(1/2)mv²
    h=(1/2)mv²/mg
    =v²/(2g)

  • Ramoshidi Physics -

    A girl hold a 2kg netball at height of 1,5 m above the ground and throws is vertically upwards at a velocity of 4 m.s.it reaches its turning point and falls back to the ground

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    a boy who is 1.5m tall throws a ball into the air the ball attains a height a of 3m above the boy's head and then falls back to the ground the boy's hand was 1.2 m above the ground when he released the ball how long does it take to …
  2. College algebra

    When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” …
  3. Physics

    How much kinetic energy does a 1 kg ball have if it has a velocity of 10 m/s?
  4. 8th grade physical science

    What is the kinetic energy of a 1 kilogeram ball is thrown into the air with a velocity of 30m/sec?
  5. science

    a 0.15 kg ball is thrown into the air & rises to a height of 20.0 m. how much kinetic energy did the ball initially have?
  6. physics

    A 0.73 kg ball is thrown straight up with an initial velocity of 2.50 m/s. Taking the potential energy of gravity to be zero at the height from which the ball is thrown, determine its gravitational potential energy at the balls highest …
  7. physics

    A tennis ball (m  57 g) is projected vertically with an initial speed of 8.8 m/s. (a) If the ball rises to a maximum height of 3.7 m, how much kinetic energy was dissipated by the drag force of air resistance?
  8. Physics

    12th grade physics ap question. A baseball with a mass of 120 g is hit 21.8 m into the air. The ball is caught by the third baseman 2.5 m above the ground. What potential energy did the ball develop at its highest point?
  9. physics

    A spring loaded gun is used to shoot a 1.3 kg ball from a rooftop. When the gun is fired, a compressed spring will be released shooting the ball into the air. The ball will travel in a parabolic path eventually striking the ground …
  10. physics

    A boy throws a ball up into the air with a speed of 12.3 m/s. The ball has a mass of 0.25 kg. How much gravitational potential energy will the ball have at the top of its flight?

More Similar Questions