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q2

(3) (a) A car accelerates at a constant rate of 1.83m/s2 along a flat straight road.
The force acting on the car is 1.870 kN.
Calculate the mass of the car.
Give your answer to three significant figures. (3)

mass = ........................................... kg

(b) The car accelerates from rest for 16 s.
Calculate the speed of the car after 16 s. (3)



speed = ........................................... m/s

(c) The car starts on another journey.
Figure 6 shows the graph of the car’s movement.

Picture
Show that the distance travelled when the car is moving at a constant speed is greater than the distance travelled when the car is slowing down. (4)

(Total for Question 3 = 10 marks)
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