we don't know a so that means kinematics!!!
TRANSCRIPT
Worksheet 4.6 Newton's 2nd Law part 2
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we don't know a... so that means Kinematics!!!
Worksheet 4.6 Newton's 2nd Law part 2
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Remember, while the car is rolling there is no Fapp therefore the net force = Ff
But first kinematics...
Remember that we will use the "" sign when doing kinematics but not in our force equations
Worksheet 4.6 Newton's 2nd Law part 2
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Since v = constant a = o
therefore Fnet = Oso Fapp = Ff
Note the speed of the truck (35 m/s) does not matter, just that it is constant
Worksheet 4.6 Newton's 2nd Law part 2
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Since there is only Fapp which is winning and no
opposing forces Fnet = Fapp
Worksheet 4.6 Newton's 2nd Law part 2
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since V = constanta=o
therefore Fnet = o therefore Fapp = Fg
Worksheet 4.6 Newton's 2nd Law part 2
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Worksheet 4.6 Newton's 2nd Law part 2
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Uh oh! No acceleration... you
know what time it is!!!
Worksheet 4.6 Newton's 2nd Law part 2
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Worksheet 4.6 Newton's 2nd Law part 2
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Note that since the car bounces backwards its
final velocity is negative!!!
Worksheet 4.6 Newton's 2nd Law part 2
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