A 80.0 g egg dropped from a window is caught by a student. If the student exerts a net force of −2.5 N over a period of 0.25 s to bring the egg to a stop, what is the egg’s initial speed?

Known :

m = 80 gr = 0.08 kg

F = 2.5 N

∆t = 0.25 s

Solution :

F . ∆t = ∆P

F . ∆t = m(v₂ - v₁)

(-2.5 N)(0.25 s) = (0.08 kg)(0 - v₁)

v₁ = 7.8125 m/s

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

less than one you can't create energy