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  • 26-05-2021
  • Physics
contestada

Based on the Previous two questions: According to Newton's Second Law, how much force does Marisa need to apply in order to stop the sled?

a
0.048 kg m/s
b
-0.075 N
c
2.50 N
d
-0.048 N

Respuesta :

MrRoyal
MrRoyal MrRoyal
  • 03-06-2021

Answer:

See explanation

Explanation:

The question is incomplete, as the required parameters are missing. The general solution to this is as follows;

First, get the mass (m) and the acceleration (a) of the sled

So, the force (f) to stop the sled is:

[tex]f = ma[/tex] ---- Newton 2nd law

However, the force to stop the sled will be in the opposite direction of the sled.

So:

[tex]f =-ma[/tex]

Assume that:

[tex]m \to 5kg[/tex]

[tex]a \to 6m/s^2[/tex]

The required force is:

[tex]f =-ma[/tex]

[tex]f =-5kg * 6m/s^2[/tex]

[tex]f = -30N[/tex]

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