Plz hurry it's
a soccer player kicks a ball with a mass of 0.42 kg. the ball travels at a velocity of 28 m/s for 1.6 s until the goalie stops it.

what was the average acceleration of the soccer ball?
a. 0.06 m/s b. 17.5 m/s² c. 0.06 m/s² d. 17.5 m/s

(vf-v0)/t

vf=0 ...since it stops finally

v0=28 m/sec

t=1.6 sec

a=(0-28)/1.6

a=-17.5 m/s^2

so B is the answer,since magnitude is asked you neglect the negative.

notice that D is in m/sec(velocity unit)

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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