Question

which of the following sets of displacement might be capable of returning a car to its starting point​

Answer 1

Explanation:

5, 10, 30, 50 Answer: No

Even if you drove in a straight line, 5+10+30=45, so the return 50 will overshoot.

5, 7 ,9, 16 Answer: Yes

5+7+9= 21 max

7-9+5=3 min (if drive only on a straight road)

Anything between 3 and 21 is possible, including 16.

40,40,90,200 Answer: No

40+40+90 = 170 max, so the return 200 will overshoot

10, 20, 40, 90 Answer: No

10+20+40=70 max, so the return 90 will overshoot

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