So basically I was looking at some highschool physics problem and I am questioning myself as to whats the correct interpretation of the problem.
The way I interpret pic related is that since the initial velocity of the glider is 24m/s and the final is 0 (implied since they land) we can say that the acceleration is 24/4.48-> 5.35m/s^2 (at least during t=0 to t=4.48). So if we substract out the given acceleration in the opposite vector (1.56) we are left with a net acceleration "forwards" of 5.35-1.56-> 3.789m/s^2.
So just plugging that into a kinematic equation you'll get the displacement being about 145m.
The correct solution is: d=24*4.48 + 0.5*-109/70*4.48^2 = 91. But I don't see whats wrong with my approach, can you not say an object accelerates between a given time frame and then subtract out accelerations to find the "net" acceleration in a certain vector?
The way I interpret pic related is that since the initial velocity of the glider is 24m/s and the final is 0 (implied since they land) we can say that the acceleration is 24/4.48-> 5.35m/s^2 (at least during t=0 to t=4.48). So if we substract out the given acceleration in the opposite vector (1.56) we are left with a net acceleration "forwards" of 5.35-1.56-> 3.789m/s^2.
So just plugging that into a kinematic equation you'll get the displacement being about 145m.
The correct solution is: d=24*4.48 + 0.5*-109/70*4.48^2 = 91. But I don't see whats wrong with my approach, can you not say an object accelerates between a given time frame and then subtract out accelerations to find the "net" acceleration in a certain vector?
