Name: Anonymous 2006-09-19 22:17
Just two physics problems involving kinematics. I have the answers but I don't know how to get to them. Any help would be appreciated.
The problems:
1) An object moving at constant acceleration covers two equal, consecutive, 11 m long segments, the first one in t1 = 0.93s and the second one in t2 = 2.05s . What was the speed of the object (in m/s) at the beginning of the first segment?
Answer: 15.5
2) A terain vehicle, from its intial position, point A should reach a point D which is d= 12.8 km away from the straight road on which the vehicle is on. The point on the road closest to the point D is the point C. The speed of the vehicle while on the road is Vr= 56 km/h while the speed of the vehicle outside of the road is Vt= 34 km/h. Assuming that the vehicle will move along a straight line from point B where it leaves the road, calculate the distance BC so that the overall time ABD is minimum.
Answer: 9.8
I know the the wording is kinda shaky but I just copy pasta'ed it.
The problems:
1) An object moving at constant acceleration covers two equal, consecutive, 11 m long segments, the first one in t1 = 0.93s and the second one in t2 = 2.05s . What was the speed of the object (in m/s) at the beginning of the first segment?
Answer: 15.5
2) A terain vehicle, from its intial position, point A should reach a point D which is d= 12.8 km away from the straight road on which the vehicle is on. The point on the road closest to the point D is the point C. The speed of the vehicle while on the road is Vr= 56 km/h while the speed of the vehicle outside of the road is Vt= 34 km/h. Assuming that the vehicle will move along a straight line from point B where it leaves the road, calculate the distance BC so that the overall time ABD is minimum.
Answer: 9.8
I know the the wording is kinda shaky but I just copy pasta'ed it.