1. A racing motorcycle starts from rest and accelerates at a constant rate of 20 m/s/s for 3.5 seconds. What is its final velocity? FV

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N
T
1. A racing motorcycle starts from rest and accelerates at a constant rate of 20 m/s/s for
3.5 seconds. What is its final velocity?
S
4
5
DE ⠀⠀
6
DIE
2. Ms. G is driving along 270 at 65 mph. She realizes that she is exceeding the speed limit,
and takes her foot off of the gas pedal. Her little blue car decellerates at a constant rate
of -3 mph/s for 3 seconds. What is her final velocity? FV
7
Transcribed Image Text:N T 1. A racing motorcycle starts from rest and accelerates at a constant rate of 20 m/s/s for 3.5 seconds. What is its final velocity? S 4 5 DE ⠀⠀ 6 DIE 2. Ms. G is driving along 270 at 65 mph. She realizes that she is exceeding the speed limit, and takes her foot off of the gas pedal. Her little blue car decellerates at a constant rate of -3 mph/s for 3 seconds. What is her final velocity? FV 7
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Solution:- 1) For a rectilinear motion, the final velocity of an object at time t , is given as follows

v = u + at

Here,  v = final velocity ( i.e. velocity at time t )

    = initial velocity (i.e. velocity at time t=0)

   a = constant acceleration

  t = time

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