Two cyclists P and Q travel along a straight road ABC, starting simultaneously at A and arriving simultaneously at C. Both cyclists pass through B 400s after leaving A. Cyclist P starts with speed 3 ms-1 and increases this speed with constant acceleration 0.005 ms-² until he reaches B. (i) Show that the distance AB is 1600m and find P's speed at B Cyclist Q travels from A to B with speed v ms-1 at time t seconds after leaving A, where v = 0.04t – 0.0001t² + k, and k is a constant. (ii) Find the value of k and the maximum speed of Q before he has reached B. Cyclist P travels from B to C, a distance of 1400m, at the speed he had reached at B. Cyclist Q travels from B to C with constant acceleration a ms-2.

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
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ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
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Chapter2: Graphical And Tabular Analysis
Section2.1: Tables And Trends
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9. Two cyclists P and Q travel along a straight road ABC, starting simultaneously at A and arriving simultaneously
at C. Both cyclists pass through B 400s after leaving A. Cyclist P starts with speed 3 ms-1 and increases this
speed with constant acceleration 0.005 ms-2 until he reaches B.
(i)
Show that the distance AB is 1600m and find P's speed at B
Cyclist Q travels from A to B with speed v ms-1 at time t seconds after leaving A, where
v = 0.04t – 0.0001t² + k,
and k is a constant.
(ii)
Find the value of k and the maximum speed of Q before he has reached B.
Cyclist P travels from B to C, a distance of 1400m, at the speed he had reached at B. Cyclist Q travels from
B to C with constant acceleration a ms-2.
(iii) Find the time taken for the cyclists to travel from B to C and find the value of a.
Transcribed Image Text:MAD 9. Two cyclists P and Q travel along a straight road ABC, starting simultaneously at A and arriving simultaneously at C. Both cyclists pass through B 400s after leaving A. Cyclist P starts with speed 3 ms-1 and increases this speed with constant acceleration 0.005 ms-2 until he reaches B. (i) Show that the distance AB is 1600m and find P's speed at B Cyclist Q travels from A to B with speed v ms-1 at time t seconds after leaving A, where v = 0.04t – 0.0001t² + k, and k is a constant. (ii) Find the value of k and the maximum speed of Q before he has reached B. Cyclist P travels from B to C, a distance of 1400m, at the speed he had reached at B. Cyclist Q travels from B to C with constant acceleration a ms-2. (iii) Find the time taken for the cyclists to travel from B to C and find the value of a.
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