A car is travelling on a straight horizontal road. The velocity of the car, vms, at time t seconds as it travels past three points, P. Q and R, is modelled by the equation v = at² +bt +c, where a, b and c are constants. The car passes Pat time t 0 with velocity 8 ms. (a) State the value of c. The car passes Q at time t 5 and at that instant its deceleration is 0.12 ms2. The car passes R at time t= 18 with velocity 2.96 ms. (b) Determine the values of a and b. (c) Find, to the nearest metre, the distance between points P and R.

A car is travelling on a straight horizontal road. The velocity of the car, vms, at time t seconds as it travels past three points, P. Q and R, is modelled by the equation v = at² +bt +c, where a, b and c are constants. The car passes Pat time t 0 with velocity 8 ms. (a) State the value of c. The car passes Q at time t 5 and at that instant its deceleration is 0.12 ms2. The car passes R at time t= 18 with velocity 2.96 ms. (b) Determine the values of a and b. (c) Find, to the nearest metre, the distance between points P and R.

Name: Hi, I've submitted this question 4 times now and have gotten 4 differe
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Description: Hi, I've submitted this question 4 times now and have gotten 4 different results for part b and c. My answer for part b was - a = -0.02 and b = 0.08 Is that correct? A car is travelling on a straight horizontal road. The velocity of the car, vms,

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 11P: A particle moves along the x axis according to the equation x = 2.00 + 3.00t 1.00t2, where x is in...

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A car is travelling on a straight horizontal road. The velocity of the car, vms, at time t seconds as it travels past three points, P. Q and R, is modelled by the equation v = at² +bt +c, where a, b and c are constants. The car passes P at time t= 0 with velocity 8 ms. (a) State the value of c. The car passes Q at time t 5 and at that instant its deceleration is 0.12 ms2. The car passes R at time t= 18 with velocity 2.96 ms. (b) Determine the values of a and b. (c) Find, to the nearest metre, the distance between points P and R.
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A car is travelling on a straight horizontal road. The velocity of the car, vms, at time t seconds as it travels past three points, P, Q and R, is modelled by the equation v = at² +bt+c, where a, b and c are constants. The car passes P at time t= 0 with velocity 8 ms¯. (a) State the value of c. The car passes Q at time t= 5 and at that instant its deceleration is 0.12 ms¯². The car passes R at time t = 18 with velocity 2.96 ms (b) Determine the values of a and b. (c) Find, to the nearest metre, the distance between points P and R.
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