Answer:
Ornaments are made of metal because they are lustrous and temple bells are made of metals because they have the property of sonority
Lustrous- property of metal by virtue of which metals can shine is known as lustre
sonority- property of metals by virtue of which metals produce a ringing sound is known as sonority
The car's velocity after 5s : 10 m/s
<h3>Further explanation</h3>
Given
velocity=v=72 km/h=20 m/s
time=t = 5 s
acceleration=a = -2 m/s²
Required
velocity after 5s
Solution
Straight motion changes with constant acceleration

vf=final velocity
vi = initial velocity
Input the value :

The car is decelerating (acceleration is negative) so that its speed decreases
When the mixture is homogeneous