A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. His mass is about?

mgh.4620=m x10 x 8.4 (9.81->10) m = 4620/10x8.4m=462/8.4m=462/8m=231/4about 6kg

4620×10+8.4

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2