Developmental psychologists study infancy and childhood to learn about all of the following except
a.
the influence of heredity and environment
b.
how to foster self-esteem and self-efficacy
c.
whether growth occurs gradually or in stages
d.
an adult perspective on historical events

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.