Why is D the correct answer for this multiple choice question?

Thread starter EF17xx
Start date Mar 26, 2018
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EF17xx

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Mar 26, 2018

Homework Statement

Homework Equations

Fnet= Δp/Δt
p=mv

The Attempt at a Solution

p (before) = 0.4 x 5 = 2
p (after) = 0.4 x 3 = 1.2
Δp = 0.8
Δt = 0.2
Fnet= Δp/Δt
0.8/0.2 = 4N

Correct answer in textbook is D, I do not understand why?

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Orodruin

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Mar 26, 2018

Momentum is a vector. It has a direction.

EF17xx

Mar 26, 2018

Thank you that makes sense :)

Why is D the correct answer for this multiple choice question?

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Homework Equations

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