A car is travelling at the speed V on a straight, level road. After the brakes are applied at t-0, the motion can be approximated by t3 - t2 + 17t 100 where x is the distance traveled in meters and t is the time in seconds. Which o the following gives the distance required for the car to stop? Select the correct response 82 m 81 m 80 m 83 m < Previous

A car is travelling at the speed V on a straight, level road. After the brakes are applied at t-0, the motion can be approximated by t3 - t2 + 17t 100 where x is the distance traveled in meters and t is the time in seconds. Which o the following gives the distance required for the car to stop? Select the correct response 82 m 81 m 80 m 83 m < Previous

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

Finding x(t) and v(t) by Integration 5. The acceleration of a jeepney is given by a, (t) = at – ßt? т where a = 1.50 m/.3 and ß = 0.120 m /s4 The motorcycle is at rest at the origin when time t = 0. a. Find its position and velocity as functions of time. b. Calculate the maximum velocity it attains.
A body moving in a straight line. The following equation determines its location (3-x=2+t(t), noting that The location is measured in meters and the time is measured in seconds . Find out the times when there is a site The object is at point zero, i.e. 0 = x t=0 and t=1 t=1 and t=3 t=0 or t=1 t=1or t=2 t=1and t=2
Driving along a crowded freeway, you notice that it takes atime t to go from one mile marker to the next. When you increaseyour speed by 7.9 mi>h, the time to go one mile decreases by 13 s.What was your original speed?
All I need is the letter of correct answer. An airplane must have a velocity of 50 m/s in order to take off. What must the acceleration of the airplane be if it is to take off from a runway 500 m long? A) 2.5 m/s˄2 B) 3.2 m/s˄2 C) 5.0 m/s˄2 D) 10 m/s˄2 15A car with its brakes applied has an acceleration of -1.2 m/s˄2. If its initial velocity is 10 m/s, the distance the car covers in the first 5 second after the acceleration begins is A) 15 m; B) 32 m; C) 35 m; D)47 m.
An antelope moving with constant acceleration covers the distance 65.0 mm between two points in time 7.00 ss. Its speed as it passes the second point is 16.0 m/sm/s. What is its speed at the first point? Express your answer with the appropriate units. v = What is the acceleration? Express your answer with the appropriate units. a=
The acceleration of a particle is given by a = a√t 5 where A = 2.5 m/s2. At t = 0, v = 6.2 m/s and x=0. ▶ Part A Part B ▾ Part C What is the acceleration at t= 4.5 s? Express your answer using two significant figures. a = Submit Part D ——| ΑΣΦ v= Request Answer What is the speed at t = 4.5 s? Express your answer using two significant figures. ? 15| ΑΣΦ ? m/s² m/s
A car is traveling at an initial speed of 20 m/s and slows to rest with an acceleration of -5.0 m/s?. What is the stopping distance, in meters? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
Finding x(t) and v(t) by Integration 5. The acceleration of ajeepney is given by a, (t) = at – Bt? a = 1.50 m/3 and ß = 0.120"m /,+ %3D where The motorcycle is at rest at the origin when time t = 0. a. Find its position and velocity as functions of time. b. Calculate the maximum velocity it attains.
Cheetahs can accelerate to a speed of 20.2 m/s in 2.65 s and can continue to accelerate to reach a top speed of 29.0 m/s . Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +? direction point in the direction the cheetah runs.Express the cheetah's top speed ?top in miles per hour (mi/h) .Starting from a crouched position, how much time ?accel does it take a cheetah to reach its top speed and what distance ? does it travel in that time?
v (mi/h) Velocity 100 80 60 40 20 0 Acceleration = 0 t = 5 Round the answers to the nearest whole part. (a) Using the graph, estimate the acceleration at 60 mi/h (in ft/s²). 10 15 20 25 30 Time t(s) (b) Using the graph, estimate the time at which the maximum accelereation occurs. S ft/s²
The velocity v of a particle moving in the xy plane is given by v = (6.5t -4.0t2 )i + 6.0j, in m/s. Here v is in m/s and t (for positive time) is in s. What is the acceleration when t = 3.0 s? i-component of acceleration? j-component of acceleration? When (if ever) is the acceleration zero (enter time in s or 'never')? When (if ever) is the velocity zero (enter time in s or 'never')?
In m/s?, what is the acceleration when t = 7.5 sec? Express your answer as an integer, not as a fraction. 20 15 10 10 15 25 t(sec) -5 -10 -15 -20 v(m/sec) 20