Mathematics 9709/43 — October/November 2014

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

questions

marks

minutes

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

Q1Energy, Work and PowerNewton's Laws of MotionFree sample

A car of mass $1400\text{ kg}$ moves on a horizontal straight road. The resistance to the car’s motion is constant and equal to $800\text{ N}$ and the power of the car’s engine is constant and equal to $P\text{ W}$ . At an instant when the car’s speed is $18\text{ m s}^{-1}$ its acceleration is $0.5\text{ m s}^{-2}$ .

(i)

Find the value of $P$ .

(ii)

The car continues and passes through another point with speed $25\text{ m s}^{-1}$ .

Find the car’s acceleration at this point.

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6 more questions

Q2Newton's Laws of Motion5M
Q3Forces and Equilibrium6M
Q4Kinematics of Motion in a Straight Line7M
Q5Forces and Equilibrium · Newton's Laws of Motion8M
Q6Newton's Laws of Motion · Kinematics of Motion in a Straight Line8M
Q7Newton's Laws of Motion · Energy, Work and Power · Forces and Equilibrium · Kinematics of Motion in a Straight Line11M

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