Mass, Weight, Gravity

Question 1

gravity is?

Answer 1

the force of attraction between all masses. it makes all things on earth accelerate towards the ground. it gives everything a weight.

Question 2

difference between weight and mass

Answer 2

mass will be the same anywhere in the universe.

weight will change depending on the gravitational field strength. weight is a force, mass is not.

Question 3

formula: weight

Answer 3

mass x gravitational field strength

Question 4

weight is measured in:

Answer 4

newtons

Question 5

weight is the ________

Answer 5

effect iof a gravitational field strength on a mass

Question 6

g is measured in:

Answer 6

N/kg

Question 7

what is the gravitational field strength

Answer 7

is a measure if the force if gravity in a particular location

Question 8

mass is?

Answer 8

a measure of the amount of material something contains

Question 9

weight is?

Answer 9

the force due to gravity acting on an object

Question 10

what would happen if two astronauts were playing football on the moon?

Answer 10

it would be just as difficult to halt a tackle by one of them as it would be on earth, and any collisions would hurt just as much

this is because the mass of an object resists any change in motion of the object, and the mass of the astronaut is the same on earth and the moon

Question 11

how do you weigh something using a spring balance?

Answer 11

the top of the spring is hung from the hook and the spring is stretched by the weight of the pan attatched to its lower end

when a known mass is placed in the pan, the spring stretches further due to the extra weight and the new pointer position can be marked

Question 12

what would happen if a spring balance reading 30N was moved to the moon?

Answer 12

the weight would be less and the spring would stretch less far. it would indicate a weight of 4.8 N