Annual Examinations For Secondary Schools 2015 (Physics) Worksheets - Department For Curriculum Management Page 5
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124.
a) Daniel and Julia pack their bags and go camping with
their car. The mass of their car is 2700 kg, whilst Daniel,
Julia and their bags have a mass of 160 kg. What is the
total mass of the car, bags and passengers?
________________________________________________________________________[1]
b) Calculate the total weight of the car when Daniel, Julia and their bags are inside the car.
________________________________________________________________________[2]
c) The area of contact of one tyre with the ground is 0.04 m
2
. What is the area of contact of the
four tyres in m
2
?
________________________________________________________________________[1]
d) Calculate the pressure that the car exerts on the ground when Daniel, Julia and their bags are
inside the car.
__________________________________________________________________________
__________________________________________________________________________
________________________________________________________________________[2]
e) Daniel drives onto a sandy beach and the car is stuck in the sand. Julia explains to Daniel
that if the pressure made by the tyres on the sand is reduced, they will be able to drive off.
Suggest what they can do to decrease the pressure made by the tyres on the sand. Explain.
__________________________________________________________________________
________________________________________________________________________[2]
Physics – Form 3 Secondary – Track 2 – 2015
Page 5 of 12
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