Ask Question
PhysicsPhysics
22 March, 23:49

A 27.5 kg ball is thrown at an angle of 22.7° above the horizontal off of a building such that its initial potential energy is 423 J, and the initial kinetic energy is 347 J.

What will be the speed of the ball at the moment before it hits the ground?

*Remember to use the conservation of Energy!

+3
Answers (1)
  1. 23 March, 00:14
    0
    7.48 m/s

    Explanation:

    Total energy of the ball doesn't change

    So,

    Initial energy = Final energy

    Initial Kinetic + Initial Potential = Final Kinetic + Final Potential

    347 + 423 = ((1/2) * 27.5 * v^2) + (27.5 * 9.81 * 0)

    770 = 13.75 * v^2

    v^2 = 56

    v = 7.48
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A 27.5 kg ball is thrown at an angle of 22.7° above the horizontal off of a building such that its initial potential energy is 423 J, and ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
In mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart weight in terms of the whole body weight. Use the model to fins a. the weight of a human whose weight is 183 lbs.
Answers (1)
The transfer of energy through varios stages in an ecological community is called
Answers (2)
This experiment is to see if water flows faster out of a smaller can or a larger can. You will need: • two cans (one quite small like a soup can and the other large, like a juice, can.) Follow these steps: A. Remove the top of each can.
Answers (1)
In your research lab, a very thin, flat piece of glass with refractive index 1.50 and uniform thickness covers the opening of a chamber that holds a gas sample. The refractive indexes of the gases on either side of the glass are very close to unity.
Answers (1)
Night vision glasses detect energy given off by objects as 1ultraviolet waves. 2radio waves. 3 microwaves. 4infrared waves.
Answers (1)
New Questions in Physics
Determine the power input for a motor necessary to lift 300 lb at a constant rate of 7 ft/s. the efficiency of the motor is ϵ = 0.65.
Answers (1)
The thermal contact resistance at the interface of two 1-cm thick copper plates is measured to be 0.000056 m2K/W.
Answers (1)
A provides resistance in an electric circuit. a. wire b. light bulb c. switch. d. battry
Answers (1)
Why is it good for scientist to be skeptical
Answers (1)
Which of the following describes a scientific law? A. based of scientific evidence B. explains how and why nature does what it does C. not based of scientific evidence
Answers (2)
Home » Physics » A 27.5 kg ball is thrown at an angle of 22.7° above the horizontal off of a building such that its initial potential energy is 423 J, and the initial kinetic energy is 347 J.
Sign Up Forgot Password?