A raindrop falls vertically down beside a tall building. It takes 0.5s for the raindrop to pass by the second-floor window, which is 1.5 m tall. If the bottom of the window is 3.5m from the ground, find the time for the raindrop to go from the bottom of the window to the ground. Neglect air resistance. Please explain as much as possible, thanks in advance

if a star is moving toward earth, its light waves appear to be squeezed together. hope it

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

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