Answer:
workdone by the person in J is 445.92J
Explanation:
workdone= force x total distance
force= mass x acceleration due to gravity(g)\
mass=4.5kg
g=9.81m/s
force= 4.5 x 9.81 =44.15N
total distance=1.4+8.7=10.1m
workdone=44.15 x 10.1
=445.92J
Answer:
How are scientists using evolutionary theory in efforts that can help people? Evolutionary theory is being used to understand, and help fight, the emergence of antibiotic-resistant diseases and other new diseases, and even to guide thinking in computer science.
Explanation:
Substage 3
develops schematic ideas
deliberate actions focus on
repeating interesting effects
direct imitation
focused on self
simple associations
increased physical skills
enable infant to handle materials
more effectively
Activities included are
reaches for and grasps objects, manipulates items
repeats interesting or surprising
actions
copies another baby banging with a
wooden spoon
links objects by function
sits and passes toy from one hand to
the other