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Can someone explain this question using a FBD?

Answer 1

Benjamin Asiedu

Acceleration #a=-5404.593ms^-2# rounded to three decimal places. #-ve# sign shows that it is retardation.

Force #f=783.666N# rounded to three decimal places.

We must assume the following in order to simplify the problem: (Presume if these are understood, FBD may not be needed)

(a) We know that that for constant acceleration #a#

#v^2-u^2=2as# Where various symbols have meaning well known to us. Inserting given values

#0^2-(38.2)^2=2xxaxx0.135#, solving for #a# #a=-5404.593ms^-2# rounded to three decimal places. Negative sign shows that direction of acceleration is opposite to the direction of motion. (b) Force #f=mxxa# #:.f=0.145xx5404.593=783.666N# rounded to three decimal places.

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Answer 2

Amelia Adams

Sure, could you please provide the specific question or scenario you'd like explained using a free-body diagram (FBD)? Once I have that information, I'll be able to provide a detailed explanation with the accompanying FBD.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.