Answer the following questions regarding the motion of a runner.(a) A runner starts a race at rest then accelerates for 10.0 s reaching a velocity of 9 m/s. How far does she run during this 10.0 s ?(b) b) What is the acceleration during this 10.0 s ?(c) She then maintains the velocity of 9.50 m/s for the next 48 meters. How long does it take for her to run this 50 meters at the maintained velocity ?

initial velocity = V0= 0 m/s time = t = 10 sec final velocity = V = 9 m/s

Answered: (a) A runner starts a race at rest then…

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

An apple falls from an apple tree, from a height of 12m above the ground. (a) How much time it will take to travel half the distance to the ground? (b) How long does it take to reach the ground? (c) What is the velocity of the stone after 0.5 s? (d) What is its velocity when it touches the ground? (a) How much time it will take to travel half the distance to the ground? The time taken to travel half the distance to the ground = (Please type/enter your answer here) (b) How long does it take to reach the ground? The time taken to reach the ground = (Please type/enter your answer here) S (c) What is the velocity of the apple after 0.5 s? Velocity of the apple after 0.5s = m/s (Please type/enter your answer here) (d) What is its velocity when it touches the ground? Velocity of the apple when it touches the ground m/s (Please type/enter your answer here)
A small block has constant acceleration as it slides down a frictionless incline. The block is released from rest at the top of the incline, and its speed after it has traveled 6.60 m to the bottom of the incline is 3.80 m/s. What is the speed of the block when it is 4.20 m from the top of the incline?
An apple falls from an apple tree, from a height of 15m above the ground. (a) How much time it will take to travel half the distance to the ground? (b) How long does it take to reach the ground? (c) What is the velocity of the stone after 1.5 s? (d) What is its velocity when it touches the ground? (a) How much time it will take to travel half the distance to the ground? The time it will take to travel half the distance to the ground= (Please type/enter your answer here) (b) How long does it take to reach the ground? Time taken to reach the ground = (Please type/enter your answer here) (c) What is the velocity of the apple after 1.5 s? Velocity of the apple after 1.5 s= m/s (Please type/enter your answer here) (d) What is its velocity when it touches the ground? Velocity of the apple when it touches the ground = m/s (Please type/enter your answer here)
A train starts from rest and accelerates uniformly, until it has traveled 2.5 km and acquired a velocity of 24 m/s. The train then moves at a constant velocity of 24 m/s for 400 s. The train then slows down uniformly at 0.065 m/s2, until it is brought to a halt. What is the total time traveled by the train?
Superman starting from rest has an acceleration of 10m/s2 up. He makes it 127m into theair before he’s exposed to kryptonite and is only under the influence of gravity.(a) How long after take off is Superman exposed to kryptonite?(b) What is Superman’s velocity when he is exposed to the kryptonite?(c) What is the maximum height Superman reaches?(d) What is the total amount of time Superman is in the air?
A startled armadillo leaps upward, rising 0.586 m in the first 0.204 s. (a) What is its initial speed as it leaves the ground? (b) What is its speed at the height of 0.586 m? (c) How much higher does it go? Use g=9.81 m/s2.
While entering a freeway, a car accelerates from rest at a rate of 2.8 m/s2 for 14.5 s. How far does the car travel in those 14.5 s, in meters? And what is the car's final velocity, in meters per second?
A high-performance sports car can go from 0 to 100 mph (44.7 m/s) in 7.9s. a) What is the car's average acceleration? b) The same car can come to a complete stop from 30 m/s in about 3.2 s. What is its average acceleration?
Traveling with an initial speed of 70 kph, a car accelerates at 6000 km/hr2 along a straight road. How long will ittake to reach a speed of 120 kph? Also, through what distance does the car travel during this time?
An object falls from the Transco Tower in Houston and takes 15 seconds to reach the ground. (a) What is its velocity at impact if air resistance is ignored? (b) How tall is the building? (c) What is its acceleration at the 2nd second? (d) If the Transco Tower were actually 3000 meters tall, how long would an object take to free-fall off the top of the building? (ignoring air resistance)
At the end of a race a runner decelerates from a velocity of 8.70 m/s at a rate of 2.10 m/s². (a) How far in meters does she travel in the next 4.60 s? (Assume the deceleration of 2.10 m/s is constant over the full 4.60 s.) (b) What is her final velocity in m/s? (c) Evaluate the result. Does it make sense?
When startled, an armadillo will leap upward. Suppose it rises 0.544 m in the first 0.200 s. (a) What is its initial speed as it leaves the ground? (b) What is its speed at the height of 0.544 m? (c) How much higher does it go?

SEE MORE QUESTIONS

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