In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 1.20 s later, at distance d = 27.0 m from the building and at angle θ = 68.0° with the horizontal. (a) Find h. (Hint: One way is to reverse the motion, as if on videotape.) What are the (b) magnitude and (c) angle relative to the horizontal of the velocity at which the ball is thrown (positive angle for above horizontal, negative for below)?

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

prolly a beacuse the momentuem the car has increases while going down hill

this could be newton#'s law of cooling. the cooling curve is exponential

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it