Fig. 3.1 illustrates three horizontal forces acting on a car while it travels along a straight road. These horizontal forces all act on the same straight line.
(a(i))[3]
Calculate the magnitude of the resultant horizontal force on the car and state its direction.
(a(ii))[2]
Describe and explain where this 100 kJ of energy goes.
(b)[4]
Fig. 3.2 shows the force exerted on the brake pedal by the driver’s foot. Calculate the moment of the force about the pivot. Include the unit.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Resultant = $900 - (300 + 250)$” …