Question

Jeff is chasing his brother running 12m/s.He speeds up to 21m/s over 15 seconds.What is the acceleration?

Answer 1



a = 0.6 m/s² .

Step-by-step explanation:

given that:

• Vi = 12m/s

• Vf = 21 m/s

• t = 15 s

• a = ?

∴ a = (Vf - Vi) / t

⇒ a = (21 - 12) / 15

⇒ a = 0.6 m/s² ...answer...

Note that:

▪ 'Vf' refers to final velocity

▪ 'Vi' refers to initial velocity

▪ 't' refers to time period

▪ 'a' refers to acceleration



hope that helps...