Problem Solving 3.103 Part A Write the position-time equation for the ball. A ba

Question

Problem Solving 3.103 Part A Write the position-time equation for the ball. A ball starts from rest at the initial position xi = 0 The ball has a constant acceleration of 2.4m/s2 Express your answer in terms of t. Submit My Answers Give Up Part B What is the position of the ball at 1.2s? Express your answer to two significant figures and include the appropriate units. IA Zf=1 Value Units Submit My Answers Give Up Part C What is its position at 2.0 s? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

a)

Vi = initial velocity = 0 m/s

a = acceleration = 2.4 m/s2

t = time of travel

xo = initial position = 0

position at any time is given as

x = xo + Vi t + (0.5) a t2

x = 0 + 0 t + (0.5) (2.4) t2

x = (2.4) t2

b)

at t = 1.2

x = (2.4) (1.2)2

x = 3.5 m

c)

at t = 2

x = (2.4) (2)2

x = 9.6 m

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