I would be rather hit by 3kg object travelling at 2.5 m/s.
Explanation:
Obviously, 3kg is way more heavier than 1.5 kg object, and the fact that if its more heavy it would surely not hit you. Unlike the 1.5 kg at 12 m/s, you would surely feel more pain.
Answers & Comments
Answer:
I would be rather hit by 3kg object travelling at 2.5 m/s.
Explanation:
Obviously, 3kg is way more heavier than 1.5 kg object, and the fact that if its more heavy it would surely not hit you. Unlike the 1.5 kg at 12 m/s, you would surely feel more pain.