Use newtons second law F=ma, plug in the given values which gives us the answer of 22 kg for the mass
Answer:29.627 m
Explanation:
Given
Initial velocity of life preserver(u) is 1.6 m/s
it takes 2.3 s to reach the water
using equation of motion
v=u+at

v=24.163 m/s
Let s be the height of life preserver



s=29.627 m
B. Decreasing surface area of a solid reactant. The more surface area showing, the quicker the reaction rate.
weight less on moon than on earth.
high on lift off - G force
low in orbit.
zero at a point between earth and moon