A sprinter in a 200-m race accelerates uniformly for the first 45 m and then runs with constant velocity. If the sprinter's time for the first 45 m is 6.8 s, determine (a) his acceleration, (b) his final velocity, (c) his time for the race.

A sprinter in a 200-m race accelerates uniformly for the first 45 m and then runs with constant velocity. If the sprinter's time for the first 45 m is 6.8 s, determine (a) his acceleration, (b) his final velocity, (c) his time for the race.

Name: 2- A sprinter in a 200-m race accelerates uniformly for the first 45
Uploaded: 2024-03-05T11:56:34.000Z
Channel: Bartleby
Description: 2- A sprinter in a 200-m race accelerates uniformly for the first 45 m and then runs withconstant velocity. If the sprinter's time for the first 45 m is 6.8 s, determine (a) hisacceleration, (b) his final velocity, (c) his time for the race.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 9CQ: There is a distinction between average speed and the magnitude of average velocity. Give an example...

See similar textbooks

Similar questions

There is a distinction between average speed and the magnitude of average velocity. Give an example fiat illustrates the difference between these two quantities.
A very strong, but inept, shot putter puts the shot straight up vertically with an initial velocity of 11.0 m/s. How long does he have to get out of the way if the shot was released at a height of 2.20 m, and he is 1.80 m tall?
An arrow is shot straight up in the air at an initial speed of 15.0 m/s. After how much time is the arrow heading downward at a speed of 8.00 m/s? (See Section 2.6.)
Kathy tests her new sports car by racing with Sian, an experienced racer. Both start from rest, but Kathy leaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.50 m/s2, while Kathy maintains an acceleration of 4.90 m/s2. Find (a) the time at which Kathy overtakes Stan, (b) the distance she travels before she catches him, and (c) the speeds of both cars at the instant Kathy overtakes Stan.
A jogger jogs from one end to the other of a straight track in 2.50 min and then back to the starting point in 3.20 min. What is the joggers average speed (a) in jogging to the far end of the track, (b) coming back to the starting point, and (c) for the total jog?
2) A car accelerates uniformly from rest and after 12 seconds has covered 40 m. What is: a. its acceleration b. its final velocity
7- In a slap shot, a hockey player accelerates the puck from a velocity of 8.00 m/s to 40.0 m/s in the same direction. If this shot takes 3.33×10−2s, calculate the distance over which the puck accelerates?
6. A sports car must achieve a velocity of 100m.s after passing the entry tollgate of an expressway. If the driver can do it after travelling 200m, what must his car's acceleration?
2.What is the initial velocity of an automobile acquiring a final velocity of 32 m/s with an acceleration of 4.0 m/s2 for 5.0 seconds?
15 - A vehicle in a stationary state accelerates smoothly and reaches a speed of 10 m / sec in 4s and continues on its way for 5 seconds, then slows down smoothly and stops after 4 seconds. How many meters is the total displacement?A) 100B) 70C) 90D) 60E) 80
3 -The speed of an object moving with constant acceleration increases to 12m/s in 6m/s in 3s. What is the acceleration of the object? A) 6 m/^2 B) 4 m/^2 C) 9 m/^2 D) 1 m/^2 E) 2 m/^2
8. An automobile accelerates at a constant rate of 15 mi/hr to 45 mi/hr in 15 seconds, while travelling in a straight line. What is the average acceleration in ft/s2?