04-01-2013, 06:14 PM

Lot's of questions:

1. A meteor with a mass of 2500.kg has a weight of 0.276N at a certain distance from the Earth's centre of mass.

a) What will be the meteor's weight if it moves halfway towards Earth's centre of mass?

b) How far from Earth's centre of mass is the meteor?

2. Phred wants to slide one of his moving boxes down a ramp to his basement. if the coefficient of kinetic friction between the box and the ramp is 0.35, what angle must the ramp be at to keep the box moving once he gets it started?

3. Two meteors are floating 110m apart in space. One meteor has a mass of 850kg, while the other has a mass of 1050kg. How long will it take for the two meteors to impact each other?

I have answers and a process for getting the first two that are supposedly right but the process is unclear so I'm confused. "Phred" is what it says in the question, my teacher changes words that start with "F" to "Ph" and vice versa.

1. A meteor with a mass of 2500.kg has a weight of 0.276N at a certain distance from the Earth's centre of mass.

a) What will be the meteor's weight if it moves halfway towards Earth's centre of mass?

b) How far from Earth's centre of mass is the meteor?

2. Phred wants to slide one of his moving boxes down a ramp to his basement. if the coefficient of kinetic friction between the box and the ramp is 0.35, what angle must the ramp be at to keep the box moving once he gets it started?

3. Two meteors are floating 110m apart in space. One meteor has a mass of 850kg, while the other has a mass of 1050kg. How long will it take for the two meteors to impact each other?

I have answers and a process for getting the first two that are supposedly right but the process is unclear so I'm confused. "Phred" is what it says in the question, my teacher changes words that start with "F" to "Ph" and vice versa.