Finding force - Newton's second law (Solved example)

Let's solve some examples of Newton's second law of motion. Given various details of motion, we will see how to calculate the force on a body (using the second law of motion formula F = ma)
Created by Mahesh Shenoy

[krishi]

You are the best teacher sir, please come to my school my school teacher teach like something which I really don't even know what they are teaching . So thank you so much again

[krishi]

Sir, do you teach chemistry if yes then please release a video on chemistry chapter I really don't understand chemistry please sir . Thank you so much

[GuerrasLaws]

Without applying Energy from within you, one couldn’t push or pull on an object(s) regardless of how much Force you apply. Note: Force does not physically exist like an object with mass. Force is just an expression like one would use the word, “Love” to express one’s feelings.

[jsathibabu]

Sir we have to take left side as negative so the initial velocity will be -30 m/s but you taken as + 30 m/s WHY ❓