Answer:. Mass of the object = 15kg
Step-by-step explanation:
Given the velocity of the object as 8 m/s
Energy is given as 480 j
Let m be the mass of the object
Using the formula
E = (1/2) m v^2
m = 2E/v^2
m = (2 × 480)/ 8^2
= 960/64
= 15kg
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