Asked by maggie

Jack rides his skateboard a total distance of 120 m in 20 sec. What was his speed?

5 seconds after he started Jack was at a distance of 30 meters. 10 seconds after he started he was at a distance of 70 meters. What was Jack’s speed from time = 5 sec to time = 10 sec?

Did Jack travel at a constant speed? How do you know?
Answered by Henry
a. Speed = 120m/20s = 6 m/s.

b. Speed = (70m-30m)/(10s-5s) = 8 m/s.

c. No, Jack did not travel at a constant speed:
30m/5s = 6 m/s after 5 s.
70m/10s = 7 m/s after 10 s.

Answered by kkn.
,bkjmn
Answered by ur mom
bleh
Answered by ur mom
this was my hw and the answer for c or the last question that Henry posted doesn't make sense. well the answer does but not the explanation.
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