Mathematics 9709/42 — May/June 2015

Cambridge A-Level · Mechanics · worked solutions for every part, with the mark scheme

questions

marks

minutes

Topics Kinematics of Motion in a Straight Line · Energy, Work and Power · Newton's Laws of Motion · Forces and Equilibrium

Q1Kinematics of Motion in a Straight LineEnergy, Work and PowerFree sample

One end of a light inextensible string is attached to a block. The string makes an angle of $60^{\circ}$ above the horizontal and is used to pull the block in a straight line on a horizontal floor with acceleration $0.5\text{ m s}^{-2}$ . The tension in the string is $8\text{ N}$ . The block starts to move with speed $0.3\text{ m s}^{-1}$ . For the first $5\text{ s}$ of the block's motion, find

(i)

the distance travelled,

(ii)

the work done by the tension in the string.

The rest of this paper

6 more questions

Q2Energy, Work and Power · Newton's Laws of Motion5M
Q3Energy, Work and Power5M
Q4Kinematics of Motion in a Straight Line7M
Q5Kinematics of Motion in a Straight Line6M
Q6Kinematics of Motion in a Straight Line · Newton's Laws of Motion11M
Q7Forces and Equilibrium12M

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