150140What is the130120 -object's change inmomentum if ithas a mass 4 kg?11010090-8070605040-30-20-10-044 $ 6 8 9 10time (seconds)distance (meters)

Answered: 150 140 What is the 130 120 object's…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 2CQ: An object that has a small mass and an object that has a large mass have the same kinetic energy....

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Question

150
140
What is the
130
120 -
object's change in
momentum if it
has a mass 4 kg?
110
100
90-
80
70
60
50
40-
30-
20-
10-
04
4 $ 6 8 9 10
time (seconds)
distance (meters)

Expert Solution

Step 1

Given

Mass = 4 Kg

We know the expression for momentum

$p = mv$

Momentum till point p₁

$p_{1} = mv p_{1} = m \times \frac{d_{1}}{t_{1}} p_{1} = 4 \times \frac{120 - 40}{4} p_{1} = 80 Kg \cdot \frac{m}{s^{2}}$

Momentum till point p₂

$p_{2} = {mv}_{2} p_{2} = m \times \frac{d_{2}}{t_{2}} p_{2} = 4 \times \frac{90 - 120}{6} p_{2} = 4 \times \frac{- 30}{6} p_{2} = - 20 Kg \cdot \frac{m}{s^{2}}$

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