Answered: Aball is projected at an angle of 30°…

Aball is projected at an angle of 30° above the horizontal with a speed of 35 m/s. What will be its approximate horizontal range across a level surface? O A. 108 m O B. 54.2 m O C. 125 m O D. 17.5 m

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter3: Two-dimensional Kinematics

Section: Chapter Questions

Problem 22PE: A farmer wants to fence off his four-sided plot of flat land. He measures the first three sides,...

See similar textbooks

Similar questions

Lei A = 60.0 cm at 270 measured from the horizontal. Let B = 80.0 cm at some angle . (a) Find the magnitude of A + B as a function of . (b) From the answer to part (a), for what value of does | A + B| take on its maximum value? What is this maximum value? (c) From the answer to pan (a), for what value of does | A + B| take on its minimum value? What is this minimum value? (d) Without reference to the answer to part (a), argue that the answers to each of parts (b) and (c) do or do not make sense.
You stand in a flat meadow and observe two cows (Fig. P1.73). Cow A is due north of you and 15.0 m from your position. Clow B is 25.0111 from your position. From your point of view, the angle between cow A and cow H is 20.0, with cow B appearing to the right of cow A. (a) How far apart are cow A and cow B? (b) Consider the view seen by cow A. According to this cow, what is the angle between you and cow B? (c) Consider the view seen by cow B. According to this cow, what is the angle between you and cow A? Hint: What does the situation look like to a hummingbird hovering above the meadow? (d) Two stars in the sky appear to be 20.0 apart. Star A is 15.0 ly from the Earth, and star B. appearing to the right of star A. is 25.0 ly from the Earth. To an inhabitant of a planet orbiting star A. what is the angle in the sky between star B and our Sun? Figure P1.73 Your view of two cows in a meadow. Cow A U due north of you. You must rotate your eyes through an angle of 20.0 to look from cow A to cow B.
A laser beam passing through a non homogeneous sugar solution follows a curved path. Explain.
A submarine is 300 m horizontally from the shore of a fresh water lake and 100 m beneath the surface of the water. A laser beam is sent from the submarine so that the beam strikes the surface of the water 210 m from the shore. A building stands on the shore, and the laser beam hits a target at the top of the building. The goal is to find the height of the target above sea level. (a) Draw a diagram of the situation, identifying the two triangles that are important in finding the solution. (b) Find the angle of incidence of the beam striking the waterair interface. (c) Find the angle of refraction. (d) What angle docs the refracted beam make with the horizontal? (e) Find the height of the target above sea level.
Solve the problem using the Horizontal Projection Equation. Ryan claims that he can throw a dart at a dartboard from a distance of 2.0 m and hit the 5.0 cm wide bull’s eye if he throws the dart horizontally with a speed of 20 m/s. He starts the throw at the same height as the top of the bull’s eye. Will Ryan hit the bull’s eye? Support your answer with a solution.
1. A person walks out an unknown distance from a building of height 18 m and shines a flashlight beam towards its top. He finds that when the beam is elevated at an angle of 370 with respect to the horizontal, the light strikes the top of the building. Find (i) the distance walked by him and (ii) the distance the flash light beam has to travel before it strikes the top of the building.
3. Water at the top of Horseshoe Falls (part of Niagara Falls) is moving horizontally at 9.2 m/sm/s as it goes off the edge and plunges 53 mm to the pool below. If you ignore air resistance, at what angle with respect to the vertical is the falling water moving as it enters the pool? Answer in degrees.
A laser beam is aimed at a 1.0-cm-thick sheet of glass at an angle 30° above the glass.a. What is the laser beam’s direction of travel in the glass?b. What is its direction in the air on the other side of the glass?
A peregrine falcon is the fastest bird, flying at a speed of 200 mi/h. Nature has adapted the bird to reach such a speed by placing baffles in its nose to prevent air from rushing in and slowing it down. Also, the bird's eyes adjust their focus faster than the eyes of any other creature, so the falcon can focus quickly on its prey. Assume that a peregrine falcon is moving horizontally at its top speed at a height of 100m above the ground when it brings its wings into its sides and begins to drop in free fall. How far will the bird fall vertically while traveling horizontally at a distance of 100m?
A bus is moving forward at 10 m/s. A student on the bus throws a tennis ball horizontally at 15 m/s toward the front of the bus. From the perspective of an observer on the sidewalk outside the bus, the tennis ball appears to move at
HW7 Q10 A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 31 degrees from the vertical. The diver's friend is standing on the shore of the lake.
When viewing your image in mirror, if you move towards the mirror at a speed v. What happens to the image? Is it moving or stationary? If it is moving what is the speed of the image? Explain.