A 5.0-kg mass sits on the floor of an elevator that has a downward acceleration of 1.0 m/s2. On top of the 5.0-kg mass is an object of unknown mass. The force of the elevator on the 5.0-kg mass is 80 N up. Determine the unknown mass
a.
3.3 kg
b.
2.4 kg
c.
1.6 kg
d.
4.1 kg
e.
5.0 kg
d
Physics & Space Science
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