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A tennis player swings her 1000 g racket with a speed of 12 m/s. She hits a 60 g tennis ball that was approaching her at a speed of 24 m/s. The ball rebounds at 36 m/s.
a) How fast is her racket moving immediately after the impact? You can ignore the interaction of the racket with her hand for the brief duration of the collision.
b) If the tennis ball and racket are in contact for 10 ms, what is the average force that the racket exerts on the ball?
At a county fair, two children ram each other head-on while riding on the bumper cars. Jill and her car, traveling left at 3.20m/s, determine the speed of Jill and her car after the collision
If the floor at the base of a table is very hard, and a tennis ball dropped from the top of the table 1 meter high rebounds with 85% of its velocity
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
a u-tube contains mercury with a density of 13,600 kg/m^3. it is open on one end, and the other end is connected to a boiler, what is the gauge pressure at point A in the boiler
A potential energy function for a two-dimensional force is of the form U = 3.89x3 y - 5.96x. Calculate the force that acts at the point (1.28m,1.17m). Enter the x-component first and then the y-component.
A 20 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0°C is 331 m/s. What is the wavelength of the fundamental frequency
an airplane travels 85 km,62degrees north of east. Its displacement is represented by the vector A in the drawing
For the arrangement shown in the figure below, an object is placed 0.37 m in front of the converging lens, which has a focal length of 0.17 m. where is the final image formed
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 14.9 rad/s. What is the angular speed of the wheel at the higher temperature
Create a mock ANCOVA output table that supports the relationship shown above. Report your mock finding APA style.
Three point charges -q,-q, and 2q occupy the verices of an equilateral triangleof side a. Find the electric field at the center of the triangle
A ray of sunlight hits a frozen lake at a 43.9° angle of incidence. At what angle of refraction does the ray penetrate the ice
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