A film of Jesse Owens's famous long jump (Fig. 6–47) inthe 1936 Olympics shows that his center of mass rose 1.1 mfrom launch point to the top ofthe arc. What minimum speeddid he need at launch if he wastraveling at 6.5 m/s at the topof the arc?FIGURE 6–47Problem 84.

Given data: Speed at the top of the arc, v=6.5 m/s Height risen by centre of mass, h=1.1 m Let…

Answered: A film of Jesse Owens's famous long…

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)...

See similar textbooks

Similar questions

A physics textbook is placed on an inclined slope with an adjustable angle a. The coefficients of friction between the book and the slope are us = 0.5 and uk = 0.35 respectively. 1m a
(11) Block 1 has a mass of 4.95 kg and block 2 has a mass of 5.58 kg. Block 2 is released from rest at a height of h = 1.00 m above the floor. 2 h (a) Find the speed of the 5.58 kg block just before it hits the floor, if there is no friction. Submit Answer Tries 0/10 (b) Find the speed of the 5.58 kg block just before it hits the floor if the coefficient of kinetic friction of the 4.95 kg block is 0.483.
(1) A 1200 kg roller coaster cart is initially at rest at the top of the track at a height of 20 m above ground. (a) What is the speed of the roller coaster when it reached ground level? (assume no friction in this part of the track). (b) The roller coaster now continues to move horizontally. Find the distance the roller coaster will travel before arriving at a complete stop, if the coefficient of friction between the coaster and the track is 0.3.
MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER In a downhill ski race surprisingly little advantage is gained by getting a running start. This is because the initial kinetic energy is small compared with the gain in gravitational potential energy even on small hills. To demonstrate this, find the final speed and the time taken for a skier who skies 65.0 m along a 25° slope neglecting friction for the following two cases. (Note that this time difference can be very significant in competitive events so it is still worthwhile to get a running start.) (a) starting from rest final speed m/s time taken (b) starting with an initial speed of 2.00 m/s final speed m/s time taken Additional Materials O Reading
Air bags are used in cars to decelerate the occupants slowly when a car is suddenly decelerated in a crash. (a) Compute the work done by the decelerating force acting on a 55.0 kg driver if the car is brought to rest from an initial speed of 20.0 m/s. (b) Find the minimum thickness of the air bag if the average decelerating force is not to exceed 8900 N (2000 lb), and the center of the car moves forward 0.800 m during impact
(b) In unloading a grain from a hold of a ship, an elevator lifts the grain through a distance of 12 m. Grain is discharged at the top of the elevator at a rate of 2.0 kg each second, and the discharged speed of each grain particle is 3 m/s Find the minimum- horsepower motor that can elevate the grain in this way if it is 60% efficient.
A mass m is acted on by a force F,(x) = Ax' from x = 0 to x = L. (a) If m starts from rest, what is its speed at x = L? (b) Beyond x = L, F, = 0, but the mass encounters a surface with coefficient of kinetic friction 4. How far does m go before coming to rest? [Find the answer using the work-KE theorem.]
Disregarding friction, a roller coaster with a vertical drop of 46 m will achieve a speed of about 30 m/s. If the height of the drop is doubled, how much the speed is going to be?
1m 3 A 50 kg mass swings as shown. What is the speed of this mass at point B? さ
-40 A can of sardines is made to move along an x axis from F= exp(-4x), with x in meters and Fin newtons. (Here exp is the ex- ponential function.) How much work is done on the can by the force?
As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough patch '15.0 cm When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.0 cm that has a coefficient of kinetic friction u, = 0.690. Find h (in m) such that the block's speed after crossing the rough patch is 2.80 m/s. (Enter a number.) m
Answer detailly 7(ii)

Recommended textbooks for you

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

Physics for Scientists and Engineers

Physics

ISBN:

9781337553278

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Lecture- Tutorials for Introductory Astronomy

Physics

ISBN:

9780321820464

Author:

Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden

Publisher:

Addison-Wesley

College Physics: A Strategic Approach (4th Editio…

Physics

ISBN:

9780134609034

Author:

Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher:

PEARSON

SEE MORE TEXTBOOKS

A film of Jesse Owens's famous long jump (Fig. 6–47) in the 1936 Olympics shows that his center of mass rose 1.1 m from launch point to the top of the arc. What minimum speed did he need at launch if he was traveling at 6.5 m/s at the top of the arc? FIGURE 6–47 Problem 84.