1. It is in the anus part because your urine will be its in the lower part
A skateboard from rest until it accelerates at a rate of 3.5 m/s². How fast is the skateboard after travelling 8.5 m ?
We have the following data:
Vf (final velocity) = ? (in m/s)
Vi (initial velocity) = 0 m/s (from rest)
a (gravity acceleration) = 3.5 m/s²
d (displacement) = 8.5 m
Since we do not need to know the time elapsed during the movement, we apply the data of the question to the Equation of Torricelli, let us see:
Approximately 7.71 m/s
The ice where they stand on is considered to be frictionless, thus, no external force present. Their momentum is conserved in the system. There will be no change in momentum before and after the push off.
1. Boy 72 kg ? unknown
2. Girl 48 kg 6.8 m/s
Note: total initial momentum is zero and total final momentum is equal to total initial momentum.
Formula of momentum p=mv
Total initial momentum = Total final momentum
0 = p(boy) + p(girl)
0 = 72 kg × V(boy) + 48 kg × 6.8 m/s
0 - 326.4 kg. m/s = 72 kg × V(boy)
-326.4 kg.m/s / 72 kg = V(boy)
- 4.533 m/s = V(boy)
The boy moves westward at - 4.533 m/s opposite to the direction of the girl .
Hope it helps