Question

1 a) Define average speed.

b) Write the SI unit of speed.​

Answer 1

Answer:

• Average speed is defined as the total distance travelled by the time taken whereas average velocity is defined as the displacement by the time taken. Since speed is a scalar quantity, the average speed is also considered as a scalar quantity while velocity is a vector quantity.
• metre per second
• The S.I unit of speed is metre/second or metre per second i.e m s − 1 m\ s^{-1} m s−1.

Answer 2

Answer:

1)a.Ans: Average speed is defined as the total distance travelled by the time taken whereas average velocity is defined as the displacement by the time taken. Since speed is a scalar quantity, the average speed is also considered as a scalar quantity while velocity is a vector quantity.

b:.metre per second

Hope it helps!!!!