Example 2.14A long-jumper leaves the ground at an angle of 20° to the horizontaland at a speed of 11 m/s. (a) How far does he jump? (b) Themaximum height reached?Sol r = Vx²+y? = 1.29 mThe component of velocity areVx = Vo = 5 m/sVy = -g t = -2.45 m/s²The resultant velocity is given byv == 5.57 m/sThe angle 0 is given by-1e = tan-26.1°Example 2.16An object is thrown horizontally with a velocity of 10m/s from the topof a 20m high building as shown in Figure 2.7. Where does the objectstrike the ground?10m/sSolutionConsider the vertical motionVyo = 020may = 9.8 m/s?

Name: Example 2.14A long-jumper leaves the ground at an angle of 20° to the
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Description: Example 2.14A long-jumper leaves the ground at an angle of 20° to the horizontaland at a speed of 11 m/s. (a) How far does he jump? (b) Themaximum height reached?Sol r = Vx²+y? = 1.29 mThe component of velocity areVx = Vo = 5 m/sVy = -g t = -2.45 m/

2.14) Given speed v=11m/s angle with horizontal θ=200 a) We know that range of a projectile is…

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A long-jumper leaves the ground at an angle of 20° to the horizontal and at a speed of 11 m/s. (a) How far does he jump? (b) The maximum height reached?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.

Topic Video

Question

Example 2.14
A long-jumper leaves the ground at an angle of 20° to the horizontal
and at a speed of 11 m/s. (a) How far does he jump? (b) The
maximum height reached?
Sol

r = Vx²+y? = 1.29 m
The component of velocity are
Vx = Vo = 5 m/s
Vy = -g t = -2.45 m/s²
The resultant velocity is given by
v =
= 5.57 m/s
The angle 0 is given by
-1
e = tan
-26.1°
Example 2.16
An object is thrown horizontally with a velocity of 10m/s from the top
of a 20m high building as shown in Figure 2.7. Where does the object
strike the ground?
10m/s
Solution
Consider the vertical motion
Vyo = 0
20m
ay = 9.8 m/s?

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