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- ASAP14A ball thrown into the air by a child follows a parabolic path.The ball is 3.84 feet off the groundwhen the child releases the ball, and reaches a maximum height of 7.84 feet when it is at ahorizontal distance of 5 feet from the child. Draw a picture representing the situation. Make sure to label what you know. Determine the equation of the function representing the situation. Determine how far from the child the ball will be when it hits the ground.
- A car of mass m=920.0 kg is taking a turn of radius r= 38.4 m on a banked curve. If the car is moving at the critical speed v= 15.4 m/s, what is the incline angle of the curve, a? Your Answer: +Z Give your answer in degrees to one decimal place. Answer rear view of car on a bank α rAt a given instant the train engine at E has a speed of 20 m/s and an acceleration of 14 m/s² acting in the direction shown. Determine the rate of increase in the train's speed and the radius of curvature p of the path. v = 20 m/s 75 a = 14 m/s- EApplications An airplane flies due west at an airspeed of 478 mph. The wind blows in the direction of 37° south of west at 50 mph. What is the ground speed of the airplane? What is the bearing of the airplane? 478 mph 37° 50 mph a. The ground speed of the airplane is b. The bearing of the airplane is mph. south of west.
- 14 A 1 kg ball is tied to the end of a rope and spun around in a vertical circle. The ball is slowly accelerated, spinning faster and faster, until the rope breaks. At what point in the circular motion would you expect the rope to break? Group of answer choices bottom top left rightTwo balls, X and Y, are spun at a velocity of 6.5 m/s in a horizontal circle on the path shown below. Ball X has a mass of 1.3 kg, and ball Y has a mass of 0.81 kg. Which statement best describes the centripetal acceleration and centripetal forces on the balls? A. Both balls will experience equal centripetal force and centripetal acceleration. B. Ball X will experience greater centripetal force and greater centripetal acceleration. C. Ball Y will experience greater centripetal force, but ball X will experience greater centripetal acceleration. D. Both balls will experience the same centripetal acceleration, but ball X will experience greater centripetal force.е. f. Ball moving at constant speed in a vertical circle at the end of a string. Ball moving at constant speed in a vertical circle at the end of a string.
- 4 pt) Two vectors appear as in the figure. Which combination points directly downward? Circle the correct answer and support your choice with the drawing below. A. ? + ? B. ? ― ? C. ? ― ? D. ― ? ― ?choose all that apply to centripetal force. A. twice the radius needs half the centripetal force. x B. Gravitational and electrical forces can produce centripetal forces. C. Twice the speed needs four times the centripetal force. D. Centripetal force depends on the mass, tangential speed and radius of the curvature. E. Centripetal force depends on tangential spreed and radius of curvature . F. Measured in the units of N or kg m/s^2 G. Any type of force directed towards a fixed center. I chose everything except answer E and got it wrong.Which of the following statements are true. Select all correct answers a. The direction of centripetal acceleration is pointing towards the tangent direction of the circular trajectory b. The direction of centripetal acceleration is pointing towards the center of the circular trajectory c. The tangential velocity is always constant in a circular motion. d. The angular velocity is always constant in a circular motion.