science

posted by .

An outfielder throws a 1.88 kg baseball at a
speed of 57 m/s and an initial angle of 10.2.
What is the kinetic energy of the ball at the
highest point of its motion?
Answer in units of J

  • Physics -

    To find the KE of the ball at the highest ball of motion, we have to use the initial velocity and angle to find the horizontal velocity.

    V(horizontal) = V(initial) * cos(theta)
    V(horizontal) = (57 m/s) * cos(10.2)
    V(horizontal) = 56.099 m/s

    Using the velocity in the horizontal direction that we found, along with the mass given, we can calculate the KE of the ball at its highest point.

    KE = (1/2)mv^2
    KE = (1/2)(1.88 kg)(56.099 m/s)^2
    KE = 2958.27 J

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. science

    An outfielder throws a .150 kg baseball at a speed of 40.0 m/s and an initial angle of 30 degrees. What is the kinetic energy of the ball at the highest point of its motion. Work: 0^2=40^2+(.002)(-9.8m/s^2)(d) d=81.6m W=(.150kg)(9.8m/s^2)(cos30)(81.6m) …
  2. Physics

    An outfielder throws a 0.150 kg baseball at a speed of 26.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?
  3. physics

    An outfielder throws a 0.150-kg baseball at a speed of 50.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?
  4. physics

    An outfielder throws a baseball with an initial speed of 30 m/s at an angle of 13° to the horizontal. The ball leaves his hand from a height of 1.75 m. How long is the ball in the air before it hits the ground?
  5. AP PHYSICS

    A quarterback throws the football to a stationary receiver who is 15.2 m down the field. The football is thrown at an initial angle of 42◦ to the ground. The acceleration of gravity is 9.81 m/s 2 a) At what initial speed …
  6. Physics

    An outfielder throws a 0.145 kg baseball to the shortstop with a speed of 30 m/s at an angle of 20 degrees above the horizontal. How far does the ball travel?
  7. PHYSICS

    A quarterback throws the football to a stationary receiver who is 19.7 m down the field. The football is thrown at an initial angle of 43◦ to the ground. The acceleration of gravity is 9.81 m/s^2. a) At what initial speed …
  8. Physics

    An outfielder throws a 1.05 kg baseball at a speed of 99 m/s and an initial angle of 47.5 ◦ . What is the kinetic energy of the ball at the highest point of its motion?
  9. Physics

    An outfielder throws a baseball to home plate with a velocity of +15 m/s and an angle of 30°. When will the ball reach its highest altitude?
  10. Physics

    An outfielder throws a 2.12 kg baseball at a speed of 114 m/s and an initial angle of 54.8 ◦ . What is the kinetic energy of the ball at the highest point of its motion?

More Similar Questions