Question

an object moves 18 m in the first 3 s, 22 m in the next 3 s and 14 m in the last 3 s. what is its average speed

Answer 1

Hey,

D1 = 18 m
T1 = 3 s
D2 = 22 m
T2 = 3 s
D3 = 14 m
T3 = 3 s

Total distance travelled = D1 + D2 + D3
= (18 + 22 + 14) m
= 54 m.

Total time taken = (3+3+3) s
= 9 s.

So,

Average speed = Total distance travelled / Total time taken

=( 54 / 9 ) m/s

= 6 m/s .

Hope this helps you buddy!!
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