Kids Love to Crash Their Toy Cars Together

question 11

Multiple Choice

Kids love to crash their toy cars together.One such collision involves a 0.5 kg car moving at 0.3 m/s colliding with a stationary toy car of mass 0.3 kg.The two toys stick together and move away from the collision point at 0.188 m/s.By what factor is the initial kinetic energy greater than the final kinetic energy?

• A)0.63
• B)1.6
• C)2.5
• D)4.2
• E)1.0 The kinetic energy stays the same.

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Definitions:

Seasonal Indexes

Numeric factors used to adjust data for seasonal variations, making trend analysis more accurate.

Quarterly Data

Data that is collected, reported, or compiled every three months within a year, often used in business and finance to track performance.

Seasonal Indexes

Factors used to adjust data to account for seasonal effects, enabling more accurate analysis across different times of the year.

Centered Moving Averages

A technique used to smooth out short-term fluctuations in time series data and highlight longer-term trends by averaging data points centered around each point.