Question

The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 m/s2). If an

object’s mass is m=10. kg, what is its weight?

Express the weight to two significant figures and include the appropriate units.

Answer 1

`m-mass`

`w-weight`

`g-gravitational\ acceleration`


`w=m*g`


`w=10kg*9.8m/s^2`


`w=98(kg*m)/(s^2)`

You need to remember that
`1(kg*m)/(s^2)=1N`

So final answer is
`w=98(kg*m)/(s^2)=98N`