15)Bumpers on Cars Are Not of Much Use in a Collision.To

question 36

Multiple Choice

15) Bumpers on cars are not of much use in a collision.To see why,calculate the average force a bumper would have to exert if it brought a 1200-kg car (a so-called compact model) to a rest in 15 cm when the car had an initial speed of 2.0 m/s (about 4.5 mph) .(Bumpers are built with springs that compress to provide a stopping force without,hopefully,denting the metal.)

• A) 1.8 × 10⁴ N
• B) 1.6 × 10⁴ N
• C) 5.4 × 10⁴ N
• D) 6.5 × 10⁵ N
• E) 3.2 × 10⁴ N

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Definitions:

The Ego

According to Freud, is a psychological mechanism that balances the conflicting needs of the pleasure-seeking id and the restraining superego.

Impulsive

Acting or done without careful consideration of the possible consequences; driven by immediate desires.

Generalized Other

A concept in sociology that represents the general expectations of society that individuals take into account when shaping their behavior.