help in homework

New User?

Fill This Form To Receive Instant Help

Help in Homework
trustpilot ratings
google ratings


Homework answers / question archive / In the Soapbox Derby, young participants build non-motorized cars with very low-friction wheels

In the Soapbox Derby, young participants build non-motorized cars with very low-friction wheels

Physics

In the Soapbox Derby, young participants build non-motorized cars with very low-friction wheels. Cars race by rolling down a hill. The track at Akron's Derby Downs, where the national championship is held, begins with a 55ft-long section tilted 13? below horizontal.

Part A: What is the maximum possible acceleration of a car moving down this stretch of track?

Part B: If a car starts from rest and undergoes this acceleration for the full l , what is its final speed in m/s ?

pur-new-sol

Purchase A New Answer

Custom new solution created by our subject matter experts

GET A QUOTE

Answer Preview

a) What is the maximum possible acceleration of a car moving down this stretch of track

Fnet= Fgravity
=> amax = mgravity x sin(13)
=>amax = 9.8 x 0.22

= 2.20 m/sec2

b) If a car starts from rest and undergoes this acceleration for the full l, what is its final speed in m/s?

55 feet converted to meters = 16.76 meters

v2 = u2 + 2as
=>v2 = 0 + 2 x 2.20 x 16.76
=>v = √ (73.74)

= 8.59 m/s

Sitejabber (5.0)

BBC (5.0)

Trustpilot (4.9)

Google (5.0)