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University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 7CQ: How much does a 70-kg astronaut weight in space, far from any celestial body? What is her mass at...

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Based on the information the officer collected at the scene of the crime, write a scientific explanation that determines whether or not Car A was speeding when it collided with Car B.

Template: Car A was ___________________(speeding/not speeding) before the collision

Complete the table below with key information. Write ? in the box for the unknown.

	Car A - Before	Car B - Before	Car A - After	Car B - After
Mass (kg)
Velocity (m/s)

EVIDENCE

Use the space below to CALCULATE the unknown information.

m₁v₁ + m₂v₂ = (m₁+ m₂)v₃

Select your REASONING below

Group of answer choices

The car was speeding prior to the collision. Based on the conservation of momentum and the data provided, the car was found to be going 15.63 m/s. This is below the speed limit.

The car was not speeding prior to the collision. Based on the conservation of momentum and the data provided, the car was found to be going 15.63 m/s. This is below the speed limit.

The car was speeding prior to the collision. Based on the conservation of momentum and the data provided, the car was found to be going 15.63 m/s. This is above the speed limit.

The car was not speeding prior to the collision. Based on the conservation of momentum and the data provided, the car was found to be going 15.63 m/s. This is above the speed limit.

External Data
AFTER
BEFORE
A
STOP
C
Car A
Car B
Mini Cooper
Subaru Outback
Model
1,550 kg
2,100 kg
Mass
Om/s
Initial Velocity
Unknown
6.64 m/s
Final Velocity
6.64 m/s
15.64 m/s
Speed Limit
Icy
Road Conditions
3:27 p.m.
Time of Day
B.

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