The fig. shows the displacement time graph of a particle moving on a straight line path. What is the magnitude of average velocity of the particle over 10 seconds?

Options

A. `2 ms^(-1)`
B. `4ms^(-1)`
C. `6ms^(-1)`
D. `8ms^(-1)`

Answer

A

Explanation

Displacement=Final position-initial position
`=40-60=-20m`
`|vecv_(avg)|=(|"Displacement"|)/("time")=(20)/(10)=2m//s`