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Date November Example questions Marks available 3 Reference code EXN.2.SL.TZ0.3
Level Standard Level Paper Paper 2 Time zone Time zone 0
Command term Show that Question number 3 Adapted from N/A

Question

A particle moves in a straight line such that its velocity, vms-1, at time t seconds is given by

v=4t2-6t+9-2sin4t, 0t1.

The particle’s acceleration is zero at t=T.

Find the value of T.

[2]
a.

Let s1 be the distance travelled by the particle from t=0 to t=T and let s2 be the distance travelled by the particle from t=T to t=1.

Show that s2>s1.

[3]
b.

Markscheme

* This sample question was produced by experienced DP mathematics senior examiners to aid teachers in preparing for external assessment in the new MAA course. There may be minor differences in formatting compared to formal exam papers.

attempts either graphical or symbolic means to find the value of t when dvdt=0       (M1)

T=0.465s        A1

 

[2 marks]

a.

attempts to find the value of either s1=00.46494vdt  or  s2=0.464941vdt       (M1)

s1=3.02758 and s2=3.47892        A1A1

 

Note: Award as above for obtaining, for example, s2-s1=0.45133 or s2s1=1.14907

Note: Award a maximum of M1A1A0FT for use of an incorrect value of T from part (a).

 

so s2>s1        AG

 

[3 marks]

b.

Examiners report

[N/A]
a.
[N/A]
b.

Syllabus sections

Topic 5 —Calculus » SL 5.9—Kinematics problems
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