an object moving north with an initial velocity of 14 m/s accelerates 5 m/s² for 20 seconds. what is the…

an object moving north with an initial velocity of 14 m/s accelerates 5 m/s² for 20 seconds. what is the final velocity of the object?\n39 m/s\n90 m/s\n114 m/s\n414 m/s

an object moving north with an initial velocity of 14 m/s accelerates 5 m/s² for 20 seconds. what is the final velocity of the object?\n39 m/s\n90 m/s\n114 m/s\n414 m/s

Answer

Explanation:

Step1: Identify the formula

We use the formula $v = u+at$, where $v$ is final - velocity, $u$ is initial - velocity, $a$ is acceleration and $t$ is time.

Step2: Substitute the values

Given $u = 14\ m/s$, $a = 5\ m/s^{2}$, and $t = 20\ s$. Substitute into the formula: $v=14 + 5\times20$.

Step3: Calculate the result

First, calculate $5\times20 = 100$. Then, $v=14 + 100=114\ m/s$.

Answer:

C. 114 m/s