Physics Annual Examinations For Secondary Schools Form 5 - Directorate For Quality And Standards In Education, 2013 Page 8
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12This question is about linear motion.
9.
Kimberly drives her car on a journey. The
graph shows how the speed of the car changes
throughout the whole journey.
a.
Use the graph to determine:
i.
the speed while she drives at constant speed.
_____________(2)
ii.
how much time did Kimberly take to decelerate, _____________(2)
iii.
the acceleration during the first part of her journey.
________________________________________________________________________________
________________________________________________________________________________
(3)
b.
Use the graph to calculate the:
i.
distance covered by Kimberly during the first 50 s of her journey,
________________________________________________________________________________
(3)
ii.
total distance covered during the whole journey,
________________________________________________________________________________
________________________________________________________________________________
(4)
c. Andrew investigates whether the force required for moving an object at rest depends on the
mass of the object. He is given a number of boxes, a string, a force sensor and a data logger.
He attaches a string to a force sensor which is connected to a data logger and pulls the box until
it starts to move.
force
wooden box
data logger
string
sensor
i.
Write down the following steps in order.
No.
A graph of mass of boxes against force is plotted.
The smallest force to make the box move is recorded.
The apparatus is set up as shown above.
1
The experiment is repeated a few times, each time taking note of the mass
of the boxes and the force required to move them.
A box of known mass is pulled by the string attached to the force sensor.
(4)
ii.
Underline the correct answer:
The force required to move an object ( increases / decreases / remains the same ) as the
mass of the object increases.
(2)
Physics – Secondary Schools – Track 2 - Form 5 – 2013
Page 8 of 12
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