An Object Travels 7

Multiple Choice

An object travels 7.5 m/s toward the west. Under the influence of a constant net force of 5.2 kN, after 4.3 s, it is travelling 2.5 m/s toward the east. What is its mass?

A) 2200 kg
B) 4500 kg
C) 6000 kg
D) 12000 kg