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Jamal is skating on a sidewalk. His initial velocity is 0.0 m/s; 35 seconds later his velocity is 5.0 m/s. What is his acceleration?

7 m/s

-7 m/s

0.14 m/s/s

-0.14 m/s/s

Verified Answer :

0.14 m/s/s   because he is speeding up

Answer:

0.14 m/s/s

Explanation:

Acceleration is defined as the rate of change of velocity per unit time. In formula:

\(a=\frac{v-u}{t}\)

where

v is the final velocity of the object

u is the initial velocity

t is the time taken for the velocity to change from u to v

In this problem, we have:

- Jamal's initial velocity: u = 0.0 m/s

- Jamal's final velocity: v = 5.0 m/s

- Time taken: t = 35.0 s

Therefore, his acceleration is

\(a=\frac{5.0 m/s-0}{35 s}=0.14 m/s^2\)