Physical Science I: Module 8: Chapter 8: Matter and Energy Assignment

This assignment aligns with the following Module 8: Chapter 8: Matter objectives:

Explain and apply the Law of Conservation of Energy (CLO1)(CLO2)(CLO3)(CLO5)(CLO6)
Define energy, kinetic energy, and gravitational potential energy (CLO2)(CLO3)
Analyze situations that involve kinetic and potential energy. (CLO2)(CLO3)
Calculate kinetic and potential energies. (CLO2)(CLO5)

Answer the following questions:

Draw a diagram of a pendulum, and identify the position of maximum potential energy with the letter “P”. Identify the position of maximum kinetic energy with the letter “K”. Identify the position where kinetic energy is increasing with the letter “I”. Identify the position where the kinetic energy is decreasing with the letter “D”.
An initially stationary 15.0-kg crate of cheese wheels is pulled via a cable a distance d= 5.70m up a frictionless ramp to a height of h= 2.50m, where it stops. What is the potential energy of the crate after it is lifted?
A 2000 kg car is moving with a velocity of 50 km/hr. What is its kinetic energy? If the car reduces its speed by half, by what factor is the kinetic energy changed?
If friction is the only force acting on a moving object, which of the following assumptions can be made in regard to the object’s kinetic energy?

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