Question

A truck is moving 14 m/s to the south. If it takes the truck 20 seconds to reduce its velocity to 10 m/s south, what is its acceleration?

Answer 1

In the question, we are given with,
Initial velocity = 14m/s
Final velocity = 10m/s
Time taken = 20 s


Now, by using the equation of motion,

v=u+at

10 = 14 + a \(\times\) 20

\(\Rightarrow\) -4 = 20a

a= ?

Answer 2

U can also use
a=(v-u)/t

Answer 3

Both equations r identical