The change in the displacement is 70 m
What is the change in displacement?
Recall that the displacement is obtained as the product of the velocity and time. We have the velocity at two intervals.
At v1, the displacement can be obtained from;
x1 = 0.5 * 20 = 10 m
At v2, the displacement can be obtained as;
x2 = 2 * 40 = 80 m
Now
Δx = 80 m - 10 m = 70m
Thus the change in the displacement is 70 m
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