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1 of 8 0-day streak

Interpret and sketch distance-time graphs

Question 1 of 8

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A robot moves across a room. The vertical value gives distance from the reference point at each time

Model the motion along one straight route on one side of the reference point. Each moving segment has constant speed with no unshown reversals. S1, S2 and so on label the segments in time order

Endpoint data for the distance-time graph
LegTime (s)Distance (m)
S10 to 30 to 1
S23 to 71 to 1

The graph below joins the endpoint data in time order

Cartesian graph with horizontal axis time (seconds) and vertical axis distance from the reference point (m). The window is x from -1 to 8 and y from -1 to 3. Segment 1 joins (0, 0) to (3, 1). Segment 2 joins (3, 1) to (7, 1).24680-1123S1S2Time (s)From start (m)
(a)1 mark

Find the distance from the reference point when the time is 1 second

(b)1 mark

How much time is spent at the same distance?

(c)1 mark

Which is the first segment showing movement away from the reference point?