Part 2 : CALCULATE THE ACCELERATION FOR THE FOLLOWING QUESTIONS. BE SURE TO WRITE THE EQUATION EACH
TIME AND PLUG IN THE NUMBERS AND UNITS IN THE CORRECT PLACES. ALSO SHOW THE ANSWER WITH CORRECT
UNITS.
1. A car increases it’s velocity from 0 m/s to 14 m/s in 2 seconds.
2. A bicycle rider increases his speed from 5 m/s to 15 m/s in 10 seconds.
3. A racing car’s velocity is increased from 44 m/s to 66m/s in 11 seconds.
4.A train moving at a velocity of 15 m/s is accelerated to 24 m/s over a 12 second period.
5. A plane starting from rest is accelerated to its takeoff velocity of 75 m/s during a 5 second period.
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ACCELERATION
Formula for Acceleration is
a = Vf - Vi / t
a = v / t
1. A car increases it’s velocity from 0 m/s to 14 m/s in 2 seconds.
a = Vf - Vi / t
a = 14 - 0 / 2
a = 14 / 2
a = 7 m/s²
2. A bicycle rider increases his speed from 5 m/s to 15 m/s in 10 seconds.
a = Vf - Vi / t
a = 15 - 5 / 10
a = 10 / 10
a = 1 m/s²
3. A racing car’s velocity is increased from 44 m/s to 66m/s in 11 seconds.
a = Vf - Vi / t
a = 66 - 44 / 11
a = 22 / 11
a = 2 m/s²
4.A train moving at a velocity of 15 m/s is accelerated to 24 m/s over a 12 second period.
a = Vf - Vi / t
a = 24 - 15 / 12
a = 9 / 12
a = 0.75 m/s²
5. A plane starting from rest is accelerated to its takeoff velocity of 75 m/s during a 5 second period.
a = v / t
a = 75 / 5
a = 15 m/s²
Answer:
1.) a = 7 m/s²
2.) a = 1 m/s²
3.) a = 2 m/s²
4.) a = 0.75 m/s²
5.) a = 15 m/s²