I am 6'1 and I used a styrofoam block to prevent an egg from cracking. I dropped it at the top of my head and I need to know what the intial momentum, final momentum, and change in momentum is. Can anyone please help?

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?