A chunk of metal has a volume of 0.131 m^3, and a mass of 945 kg.
What is its density?
(Unit = kg/m^3)

7213.7kg/m³

Explanation:

Given parameters:

Volume of the metal chunk  = 0.131m³

Mass of the metal chunk  = 945kg

Unknown:

Density of the metal chunk  = ?

Solution :

To solve this problem, density is the mass per unit volume. It is mathematically expressed as;

  Density  =  

 So;

 Density  =   = 7213.7kg/m³

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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