The BEST weight to use for weight training in order to increase strength is one that . A.
is challenging but still allows for proper form
B.
is heavy enough to quickly reach exhaustion
C.
is light enough to prevent injury
D.
fits comfortably into the palm of your hand

i would think form in reponse to tensional forces

good for her? ? where is the question?

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

ice to water 1 water to vapour 2 latent heat