Part A Constants | Periodic Table What is the maximum possible acceleration of a

Question

Part A Constants | Periodic Table What is the maximum possible acceleration of a car moving down this stretch of track? Express your answer to two significant figures and include the appropriate units In the Soapbox Derby in (Figure 1), young participants build non-motorized cars with very low-friction wheels. Cars race by rolling down a hill. Assume that the track begins with a 47-ft-long (1 m -3.28 ft) section tilted 15 o below horizontal. You may want to review (Page). | Value m s Figure 1 of 1 Part B speed in m/s? Express your answer using two significant figures. m/s

Explanation / Answer

A)

Net acceleration, a = g sin(theta) = 9.8 x sin15 = 2.536 m/s^2

B)

Using 3rd equation of motion,

v^2 = u^2 + 2as

v^2 = 0 + 2 x 2.536 x 47 x 0.3048

Velocity, v = 8.52 m/s

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