OH i didn't see the degrees part. you want to split it up into vector components then, where -8=15cos30+at i think if the angle looks like i think it does. and also 0=15sin30+at for the x-component of the acceleration and your answer will be a vector with x and y components? I'm pretty sure you...
i didn't read your attempt cause I am really sleepy and the paragraph is really big but
you want to say the eraser went from 8m/s to 15m/s in the other direction in .3 seconds.
so use kinematics equation vfinal=vinitial+at, so vfinal=-vinitial+a(t), a=(vfinal+vinitial)/(time). vinitial is...
Had a problem on a test today where a constant radial velocity of a particle was given in radians/sec with parametric equations that defined a spiral. Later it asked if the particle was accelerating radially, linearly or a combination of the two and I put linearly only because I figured if the...