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4. The motion of an object is depicted in the following position-time graph. Determine the velocity during interval `A`, `B` and `C`.
4. The motion of an object is depicted in the following position-time graph. Determine the velocity during interval A, B and C.  `v = (∆x)/(∆t)`
A:
`v=10\ m//s`
B:
`v=0\ m//s`
C:
`v=-5\ m//s`
A:
`x_i =0`
`x_f = 20\ m`
`t_i = 0`
`t_f = 2\ s`
`v = (∆x)/(∆t)`
`v = ((20\ m)-(0))/((2\ s)-(0))`
`v=10\ m//s`
B:
`x_i =20\ m`
`x_f = 20\ m`
`t_i = 2\ s`
`t_f = 4\ s`
`v = (∆x)/(∆t)`
`v = ((20\ m)-(20\ m))/((4\ s)-(2\ s))`
`v=0\ m//s`
C:
`x_i =20\ m`
`x_f = 5\ m`
`t_i = 4\ s`
`t_f = 7\ s`
`v = (∆x)/(∆t)`
`v = ((5\ m)-(20\ m))/((7\ s)-(4\ s))`
`v=-5\ m//s` |