Answer:
c
Explanation:
this is because you move ( kinetic energy) your hands and clap the other person's hand, you will definitely hear sound right.
Answer:
Explanation:
This question seek to test the difference between a scalar and a vector quantity. A scalar quantity is a quantity that has just magnitude but no direction while a vector quantity is a quantity that has both magnitude and direction. Example of a scalar quantity is speed while example of a vector quantity is velocity.
Hence, it can be that <u>speed has magnitude but no direction while velocity has both magnitude and direction</u>.
They both have the same formula which can be written as
speed = distance ÷ time
OR as
velocity = distance ÷ time
The waves lose energy in the form of heat. The frequency of the waves continues to increase. Disturbances inside Earth's core cause earthquakes. The starting point of the disturbance is called the epicenter.
Given:-
- Speed of the unicycle = 20 m/s
- Time taken = 15 s
To Find: Distance travelled by the unicycle.
We know,
s = vt
where,
- s = Distance travelled,
- v = Speed &
- t = Time taken.
Therefore,
s = (20 m/s)(15 s)
→ s = (20 m)(15)
→ s = 300 m (Ans.)