Answer:
The answer is
2.5 s
Explanation:
From the question we are finding the time it took for the object to move from it's initial speed to it's final speed
To find the time we use the formula
[tex]t = \frac{v - u}{a} \\ [/tex]
where
t is the time taken
v is the final velocity
u is the initial velocity
a is the acceleration
From the question
v = 45 m/s
u = 20 m/s
a = 10 m/s²
The time taken is
[tex]t = \frac{45 - 20}{10} = \frac{25}{10} = \frac{5}{2} \\ [/tex]
We have the final answer as
2.5 s
Hope this helps you
