- #1
astenroo
- 47
- 0
Another free fall topic :)
Here I don't really know where to start
A body in free fall covers 64% of the total distance fallen in the last second. From what height did it fall?
y= y1 + y2, where y1=0,36y and y2=0,64y
y=.5at², where a=g=9.8 m/s²
and this is where I get stuck. In a tv-diagram it would be a straight line from origo, and the area under the line gives the distance fallen. And I'm still stuck. Utilizing the y=.5gt² would give me a parabola, and the area under the curve would give me the velocity with which it hits the ground, but I'm not sure whether that would help me much either.
Here I don't really know where to start
Homework Statement
A body in free fall covers 64% of the total distance fallen in the last second. From what height did it fall?
Homework Equations
y= y1 + y2, where y1=0,36y and y2=0,64y
y=.5at², where a=g=9.8 m/s²
and this is where I get stuck. In a tv-diagram it would be a straight line from origo, and the area under the line gives the distance fallen. And I'm still stuck. Utilizing the y=.5gt² would give me a parabola, and the area under the curve would give me the velocity with which it hits the ground, but I'm not sure whether that would help me much either.