|
2. A car moves from `A` to`B` in `10.0\ s`. It turns around at `B`, and then moves from `B` to `C` in `10.0\ s`. (Assume this car moves under a constant speed in each time intervals.)
a) Draw a position-time graph about this motion.
b) Find the velocity of this car from `A` to `B`
c) Find the velocity of this car from `B` to `C`
d) Find the average velocity of this car from `A` to `C`
2. A car moves from A toB in 10.0\ s. It turns around at B, and then moves from B to C in 10.0\ s. (Assume this car moves under a constant speed in each time intervals.)
a) Draw a position-time graph about this motion.
b) Find the velocity of this car from A to B
c) Find the velocity of this car from B to C
d) Find the average velocity of this car from A to C  `v = (∆x)/(∆t)`
(a)
(b)
`v = 5.00\ m//s`
(b)
`v = -3.00\ m//s`
(b)
`v = 1.00\ m//s`
(a)
 `v = 5.00\ m//s`
(b)
`B -> C`
`x_i = 50.0\ m`
`x_f = 20.0\ m`
`∆t = 10.0\s`
`v = (∆x)/(∆t)`
`v = (20.0\ m - 50.0\ m)/(10.0\ s)`
`v = -3.00\ m//s`
(b)
`A -> C`
`x_i = 0\ m`
`x_f = 20.0\ m`
`∆t = 20.0\s`
`v = (∆x)/(∆t)`
`v = (20.0\ m - 0)/(20.0\ s)`
`v = 1.00\ m//s` |