Q.2 Dynamics of a system can be divided into kinematics and kinetics. To analyse the dynamic of the system, accelerated motion of a body will be considered. (a) State the difference between kinematics and kinetics?
Q.2 Dynamics of a system can be divided into kinematics and kinetics. To analyse the dynamic of the system, accelerated motion of a body will be considered. (a) State the difference between kinematics and kinetics?
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Transcribed Image Text:Q.2 Dynamics of a system can be divided into kinematics and kinetics. To analyse the
dynamic of the system, accelerated motion of a body will be considered.
(a) State the difference between kinematics and kinetics?
(b) Briefly describe the differences between rectilinear motion and curvilinear
motion? Provide drawings in your answer to describe the motion.
(c) Car A is initially starting from rest and travelling along a straight road with a
constant acceleration of 5 ms-2 until it reaches a speed of 50 ms¬1 as shown in
Figure Q.2(c). Afterwards, this speed is maintained. At the same time, car B is
initially travell ing towards A at a constant speed of 30 m/s.
(i) Draw v-t graphs for both cars A and B. In both graphs, label ti which is the
time just before the cars passing by each other.
(ii) Find the distance travelled by car A when it reaches a speed of 50 m/s.
(iii) Express the equation for distance travelled in term of ti for car A when it
travels in a constant speed of 50 m/s and for car B
constant speed of 30 m/s.
it travels in a
(iv) Calculate the distance travelled by car A when i
bass car B.
I TERAOLOGL
30 km/s
B
9 km
Figure Q.2(c)
UHAN UNTU
KERANA
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