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Projectile Thrown Horizontally (in Hindi)
mam I have a doubt... in first slide in case of "y" you told acceleration is -g but in second slide in case of "y" u told acceleration is g... How???
Tamanna Chaudhary
4 months ago
Hi Arpita, you doubt is very genuine. Read carefully, you have the power to decide your own sign convention. Just stick to them and you'll get answer according to those sign conventions. In the first case, I've taken downwards as - and upward as + so, g and h both are negative. In the next slide, I chose downward as + to simplify the equation and got the answer accordingly.
Tamanna Chaudhary
4 months ago
So, choose your sign convention at the beginning of a question and stick to it while assigning signs to all quantities to get the correct answer.