This is for grade 11 and I'm in college studying this before a big test. Your Newton's Laws and Kinematics videos helped me more than my professors mickey mouse powerpoints. Blessings!
I’m a bit confused on why we don’t do anything about the Time component for the first question? The only known variables were the acceleration and V1X, does T not matter because the acceleration was zero and multiplying the two would be zero regardless?
Great question Julius! It is totally possible calculate Δt from the information given in that first problem. You can use the equation y_2 = y_1 + v_{1y}Δt + 0.5aΔt^2 to solve for time (don't forget you'll need the quadratic formula to solve it!). However, since the question doesn't ask us to calculate time, there's really no need to waste your time (pun intended) solving for it. The awesome thing about the kinematics equation we used here, (v_2)^2 = (v_1)^2 + 2a(y_2 - y_1), is that it actually _comes from_ that quadratic-looking kinematics equation with time in it, but it allows you to jump straight to calculating final velocities without having to first solve for time. I hope that helps!
This is for grade 11 and I'm in college studying this before a big test. Your Newton's Laws and Kinematics videos helped me more than my professors mickey mouse powerpoints. Blessings!
lol
😂😂😂Grade 11?
Same here😁
It's actually grade 10😂
You really have the courage to use sharpie on this
Thank you so much for this video! I'm in my first year at university studying physics and you have helped me so much.
Last answer isn't it meant to be the y component divided by the x?
Thank youuu so much for this, it has helped me so much
Thank you I understand everything from the video.
what is the frame of reference you are using for the first example
Could you use the X direction to find time?
I’m a bit confused on why we don’t do anything about the Time component for the first question? The only known variables were the acceleration and V1X, does T not matter because the acceleration was zero and multiplying the two would be zero regardless?
Great question Julius! It is totally possible calculate Δt from the information given in that first problem. You can use the equation y_2 = y_1 + v_{1y}Δt + 0.5aΔt^2 to solve for time (don't forget you'll need the quadratic formula to solve it!). However, since the question doesn't ask us to calculate time, there's really no need to waste your time (pun intended) solving for it.
The awesome thing about the kinematics equation we used here, (v_2)^2 = (v_1)^2 + 2a(y_2 - y_1), is that it actually _comes from_ that quadratic-looking kinematics equation with time in it, but it allows you to jump straight to calculating final velocities without having to first solve for time.
I hope that helps!
@@annekegretton5453 Thank you for your response, it helped a ton!!
Thank you