A 0.2 kg tennis ball starts at rest and then a racket applies a force of 2400 N for 0.3

seconds. Find the momentum of the ball,

Note: Take East as the positive direction. A (n) 81 kg fisherman jumps from a dock into a 136 kg rowboat at rest on the West side of the dock. If the velocity of the fisherman is 3.

An article in a magazine states that the people who work in uranium mines are likely to suffer from diseases. Which of these is the most reliable method to verify the information provided by the magazine? a.

If you are testing how the amount of sleep students get affects test performance, what should you change in the experiment? A. The grading of the test B. Which teacher each student has C. How much sleep each student gets D.

Which subatomic particle are located in most of the space within an atom

Which changes would result in a decrease in the gravitational force between two objects? Check all that apply.

Which of the following are the top two job expectations of people who career plan? Select all that apply. A. Hours B. benefits C. type of work D. coworkers E. security

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?