PHYS 102 CHAPTER 1 HOMEWORK DOWNLOAD A long distance runner has an averag e speed of 3 m/s during a race. How far does the runner travel in 27 min? As a baseball is being thrown, it g oes from 0.0 to 40.0 m/s in 0.18 s. A child sits on the edg e of a spinning merry g oround that has a radius of 3.0 m. The child's speed is 5 m/s. What is the child's acceleration? During a NASCAR race a car g oes 78 m/s around a curved section of track that has a radius of 260 m. What is the car's acceleration? Initially stationary (the train starts at rest), a train has a constant acceleration of 0.6 m/s2. A rock is dropped off the side of a bridg e and hits the water below 6.1 s later. During takeoff, an airplane g oes from 0 to 56 m/s in 11 s. A hig hperformance sports car can g o from 0 to 100 mph in 8.2 s. (Assume the car travels in the positive direction. Indicate the direction with the sig n of y our A passeng er jet flies from one airport to another 1,193 miles away in 2.7 h. Find its averag e speed in the mks sy stem of units. What are the "basic" or "fundamental" phy sical quantities? (Select all that apply .) Why are they called that? List the phy sical quantities identified in this chapter. From which of the fundamental phy sical quantities is each derived? Which of them are vectors, and which are scalars? What is the distinction between speed and velocity ? Describe a situation in which an object's speed is constant but its velocity is not. What does the slope of a distanceversustime g raph represent phy sically ?
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.