In a lab, the mass of object a is 2.5 kg. object a weighs:
a. 0.255 n
b. 24.5 n
c. 3.92 n
d. cannot be determined

The weight of the object is 24.5 Newton.

Explanation:

It is given that,

The mass of an object, m = 2.5 kg

We need to find its weight. We know that the weight of an object can be calculated by the product of mass and acceleration.

W = m g

g is acceleration due to gravity.

W = 24.5 Newton

So, the mass of the object is 24.5 Newton. Hence, this is the required solution.

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.