- #1
smashbrohamme
- 97
- 1
A train with a maximum speed of 105km/h has an acceleration rate of 0.25m/s² and a deceleration rate of 0.7 m/s². Determine the minimum running time between stations 7km apart, if it stops at all stations.
We are using the basic kinematics equations.
S= VoT + 1/2aT²
V=Vo +aT
V² = Vo² +2as
My main problem is what would acceleration be considered, I am giving two variables.
.25m/s² and -0.7 m/s².
So far I have S= 7km which I converted to 7000m
V= 105 km/h which I converted to 29.16m/s
But what about acceleration?
We are using the basic kinematics equations.
S= VoT + 1/2aT²
V=Vo +aT
V² = Vo² +2as
My main problem is what would acceleration be considered, I am giving two variables.
.25m/s² and -0.7 m/s².
So far I have S= 7km which I converted to 7000m
V= 105 km/h which I converted to 29.16m/s
But what about acceleration?