I Multiple Choice: Encircle the letter of the correct answer. 1. The speed/velocity of the car per unit time shown in the table below.
Time (hr
0 1 2 3
5
Speed/Velocity(km/hr) 0 20 20 60 80 0
Which of the following statements is TRUE?
A car is decelerating between 4-5 hours.
B. The car is accelerating between 1-2 hours.
C. The car returns to its original position after 5 hours.
D. The acceleration of the car from 2-3 hours and 3-4 hours are the same.
2. Mechanical waves transport energy from one place to another through alternately
vibrating particles of the medium while energy from the sun energy from the sun
reaches the earth through
A Sound Waves
B. Longitudinal Waves
C. Electromagnetic Waves
D. None of these
3. Solids, liquids, and gases differ in the way the molecules that make them up are
arrange. When
sound propagates, the energy it carries is transferred from
molecule to molecule.
Molecules of solids are closest to one another compared to liquids and gases. The energy carried
by sound can easily transfer thus sound travels in solids
A The slowest
B. with undetermined speed
C. The fastest
D. with varying speed​