Kerry klutz drops her physics book off her aunt’s high rise balcony. it hits the ground below 1.5 s later. how high is the balcony (ignore air drag).

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".