barry used a ramp to transport a load to a loading truck. the ramp made the work easier
a. increasing the size of the input force.b. reducing the input force to zero.c. changing the distance over which the input force was exerted.d. reducing the output force to zero.
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The optimistic view of human nature held by supporters of the humanistic perspective led to more positive views of human nature throughout the field of psychology. t or f?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?