A motorcyclist has an acceleration of 5 mi/hr2. If his initial velocity is 45 mi/hr, what is his final velocity after 4 hours?

the answer is a. hope this .

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j