- #1
Jess1986
- 43
- 0
Im really puzzled on this question:
A car intially accelerates at a(t) = 1/40 sin((pi x t)/1800) m/sec where t is time. What is the distance traveled in km when the car next comes to a halt. How long has the car been travelling? What is the maximum speed attained by the car?
By integrating the acceleration for velocity and equating this to zero for when the train stops i found t=3600. When integrating again to give an equation for distance traveled by the car i got (45logt)/pi in the equation. Is this correct? If so how should the constant of integration in this equation be found given log0 is undefined? If log0 is taken as zero i get a distance traveled as 50.9m which seems too small. Am i going wrong somewhere?
Also how would i go about finding max speed? Is this when acceleration is zero?
Grateful for anyones help x
A car intially accelerates at a(t) = 1/40 sin((pi x t)/1800) m/sec where t is time. What is the distance traveled in km when the car next comes to a halt. How long has the car been travelling? What is the maximum speed attained by the car?
By integrating the acceleration for velocity and equating this to zero for when the train stops i found t=3600. When integrating again to give an equation for distance traveled by the car i got (45logt)/pi in the equation. Is this correct? If so how should the constant of integration in this equation be found given log0 is undefined? If log0 is taken as zero i get a distance traveled as 50.9m which seems too small. Am i going wrong somewhere?
Also how would i go about finding max speed? Is this when acceleration is zero?
Grateful for anyones help x