2 years ago

Speed1=20 m/s. time1=5sec

1 answer:

lina2011 [118]2 years ago

4 0

Answer:

Explanation:

<h2>AVERAGE SPEED=</h2>

 $= \frac{s1 t1+ s2t2 + s3t3}{t1 + t2 + t3}$ 

 $= \frac{20 \times 10 + 30 \times 5 + 15 \times 5}{10 + 5 + 5}$ 

 $= \frac{200 + 150 + 75}{20}$ 

 $= \frac{425}{20}$ 

 $= 21.25 ms$ 

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