a tightrope walker drops a 0.001kg coin when he is 3,150m above the ground. How high above the ground was the coin when its speed is 60m/s

2966 m

Explanation:

Assuming g = 9.8 m/s and ignoring air resistance,

the coin reaches 60 m/s in t = v/a = 60/9.8 = 6.12 s

h = 3150 - ½(9.8)6.12² = 2,966.326

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

mass and volume are the answers you are looking for