Page 34 - text book form physics kssm 2020

Determining Distance, Displacement, Speed, Velocity
Malaysiakualaysiaku
and Acceleration M
MY PRIDE
The motion of an object is investigated by determining the values
The Smart Tunnel in
of its distance travelled, displacement, speed, velocity and
Kuala Lumpur has a dual
acceleration. The formulae to determine speed, velocity and function. It functions as a
acceleration are as follows: storage space and passage
of flood flow as well as an
alternative route with a
shorter distance.
Speed = rate of change of distance travelled
distance travelled
=
time taken
d
v = http://bt.sasbadi.com/p4028
t

Velocity = rate of change of displacement Acceleration = rate of change of velocity
displacement = final velocity – initial velocity
= time taken for change of velocity
time taken v – u
s a =
v = t
t

Observe the following examples to understand how to determine distance, displacement,
speed, velocity and acceleration in linear motion.

Example 1

Figure 2.6 shows Radzi’s run from A to B and then back to C. The total time taken is 20 s.
Determine the
(a) distance 100 m
(b) displacement
(c) speed
(d) velocity
of Radzi’s motion.
A C B
20 m

Figure 2.6

28
28 2.1.2
2.1.2