Graphs and speed
We know that speeding up is represented in a graph as a diagonal up, constant speed is graphed as a horizontal line and deceleration is represented as a diagonal down.
There are five moments in the description:
1. Natasha rides slowly uphill for 5 minutes
2. She speeds up
3. She rides at a consistent speed for 15 minutes
4. She goes faster and faster last 7 minutes
5. She flies downhill until she arrives
1
Since she start from rest, when she rides slowly she might speed up a bit: diagonal a little bit up, almost like a horizontal line
2
She speeds up, then this diagonal should be so steep that it might be almost a vertical line.
3
Then it might be a horizontal line
4
This should be a diagonal up
5
She slows down when she goes downhill: diagonal down
GRAPH