Acceleration Review

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Acceleration Review
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Acceleration

• 1. A girl can row a boat at a speed of 5 km/h in
  still water. The girl heads across a river that
  is 25 km wide. What is the boat's velocity in
  m/s? How long will it take her to cross the
  river?

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Acceleration

• 2. If a ball is dropped and attains a velocity of
  29.31 m/s in a time interval of 3 sec on another
  planet, what is the acceleration of gravity on
  this planet?

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Acceleration

• 3. A large rock is dropped from a bridge into the
  river below. If the time required for it to drop
  is 1.7 sec, with what speed does it hit the
  water?

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Acceleration

• 4. A runner accelerates from rest at a rate of
  1.40 m/s2 over a time interval of 8 sec. What is
  his final velocity? How far did he travel?

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Acceleration

• 5. A car traveling at 4 m/s, south, accelerates
  at 5 m/s2 over a displacement of 114 m, south.
  What is his final velocity?

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Acceleration

• 6. A woman on a motorcycle moving uniformly at a
  rate of 60 m/s passes a truck at rest. At the
  instant the motorcycle passes the truck, the
  truck begins to accelerate at the rate of 4 m/s2.
  How long does it take the truck to catch up to
  the motorcycle? How far has the motorcycle
  traveled? What is the truck's speed at this
  point?

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Acceleration

• 7. What is the acceleration of the object in the
  graph at these exact times 2 sec, 5 sec 7 sec,
  and 14 sec?

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Acceleration

• 8. Which has the greater acceleration a car that
  increases it speed from 50 to 60 km/h, or a bike
  that goes from 0 to 10km/h in the same time?
  Explain

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Acceleration

• 9. An object with an initial velocity of 4 m/s
  moves along a straight axis under constant
  acceleration. Three seconds later, its velocity
  is 14 m/s. How far did it travel during this time.

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Acceleration

• 10. A car thats initially traveling 10 m/s
  accelerates uniformly for 4 seconds at a rate of
  2 m/s2, in a straight line. How far does the car
  travel during this time?

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Acceleration

• 11. A rock is dropped off a cliff thats 80 m
  high. If it strikes the ground with an impact
  velocity of 40 m/s, what acceleration did it
  experience during its descent?