dominicnr
Answered

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scientist uses a submarine to study ocean life.
She begins at sea level, which is an elevation of o feet.
She travels straight
down for 50 seconds at a speed of 4.5 feet per
second.
She then travels
directly up for
92 seconds at a speed of 0.5 feet per
second.
this point, what is her elevation,
in feet?

Sagot :

mhanifa

Answer:

  • - 179 ft

Step-by-step explanation:

Start elevation is 0 ft

Change of position after 50 seconds

  • 50*4.5 = 225 ft

Elevation now

  • 0 - 225 = - 225 ft

Change of position after 92 seconds

  • 92*0.5 = 46 ft

Final elevation

  • - 225 + 46 = - 179 ft

Final elevation

  • -50(4.5)+92(0.5)
  • -225+46
  • -179ft

179 ft downwards

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