Physics Worksheet - Annual Examinations For Secondary Schools, 2015 Page 6
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12Section B. This section has 5 questions. Each question carries 20 marks (100 marks).
8. This question is about motion.
a) Complete the following:
Speed is a ___________________ quantity. Vector quantities, such as velocity, have both
______________ and ________________.
[3]
b) Daria and Max have an air track, a glider, a light gate and a data logger as shown in Figure 9. The
data logger measures the velocity of the glider as it passes through the light gate.
data logger
light gate
glider
air track
Figure 9
i) Why is an air track used in experiments involving moving objects?
____________________________________________________________________________ [2]
ii) Write the equation that relates kinetic energy to velocity. ___________________________ [1]
iii) Which other physical quantity is needed to calculate the kinetic energy of the glider?
___________________________________________________________________________ [1]
Their teacher asks them to investigate how the kinetic energy of the glider depends on its velocity.
iv) How can they make the gliders move at different velocities?
____________________________________________________________________________ [1]
v) Add the missing units to the quantities in the table below.
Quantity
Unit
Velocity
Kinetic energy
[2]
vi) Daria and Max predict that kinetic energy increases with increasing velocity. Do you agree
with this prediction? __________
[1]
c) A toy truck of mass 1.2 kg moving at 3 m/s to the right hits a stationary ball of mass 0.4 kg. After
the collision, the toy truck keeps going at 2 m/s while the ball moves with a different velocity.
0 m/s
3 m/s
2 m/s
v
Before
After
Figure 10
Physics – Form 5 Secondary – Track 2 – 2015
Page 6 of 12
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