An object at 100 m/s accelerates at a rate of 120 m/s 2 . What will the velocity of this object be after 100 seconds?

neither one is even close

100 + 120*100 = 12100

112 = 100 + 1.20 * 10.0
Is that maybe what you meant?
Maybe not, but you are clearly missing some decimal points

v(t) = v0 + at

Now just plug in your numbers

think about it. v increases by 120m/s every second...

Thanks sir... got ans=121

But my text is saying ans=112

Thanks sir... I will stil try it out but what's ur own final answer to this?

that's a joke, right? Go back and read what I wrote.

To find the final velocity of the object after 100 seconds, we can use the equation of motion:

Final Velocity = Initial Velocity + (Acceleration x Time)

Given:
Initial Velocity (u) = 100 m/s
Acceleration (a) = 120 m/s^2
Time (t) = 100 seconds

Plugging in these values into the equation, we get:

Final Velocity = 100 m/s + (120 m/s^2 x 100 seconds)

First, we multiply the acceleration and time:

Final Velocity = 100 m/s + (12,000 m/s)

Then, we add the initial velocity and the result of the multiplication:

Final Velocity = 100 m/s + 12,000 m/s
Final Velocity = 12,100 m/s

Therefore, the velocity of the object after 100 seconds will be 12,100 m/s.