Principles of Physical Science

Overview

For this assignment you put the answers in some of the answers are multiple choice and some answers you have to put the answers in.

Question 1

The figure below shows a car traveling on a road viewed from above (high-angle view). The car approaches from the top left, turns towards the bottom right along a straight path for distance a, then takes a left turn for a loop covering distance b. Afterward, it once again turns towards the bottom right, navigating a hairpin bend path for the distance c. the 3 answer options are remain constant,decrease ,increase

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Imagine the relationships and match the distances (a, b, and c) with the corresponding change in speed, velocity and acceleration.

Group of answer choicesWhat happens to the speed and velocity of the car when it passes through section a with constant acceleration

What happens to the speed, velocity, and acceleration of the car, when it goes uphill as it enters the loop marked as b

What happens to the acceleration of the car, when its speed and velocity decrease at a steady rate as it passes through section c

Question 2

The following video shows various movements of a car on a race track. It can also be accessed by following this linkLinks to an external site.. The instructor in the video does an amazing job at explaining how important concepts such as time, distance, displacement, speed, velocity can be applied to a real life situation. Please watch the entire video and then proceed to match the questions with the corresponding answers. There are 6 options for the answeres they are scalar,postive,vector,negative,no,yes

Group of answer choicesWhat type of quantity is speed?

What type of quantity is velocity?

Can velocity be negative?

Can time be negative in the classic physical sense, especially when applicable to real life situations as the ones described in the video?

According to the directions picked in the video, in what direction would the car be traveling if it went from B to A?

What speed would the car have if it had negative velocity?

Question 3

Fill in the blanks with the corresponding references to Newton's Laws of Motion. The First Law of Motion, also known as the Law of , states that an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity unless acted upon by an external force. The Second Law of Motion explains how the motion of an object changes in response to a . The Third Law of Motion states that for every action, there is an equal and opposite . In the context of Newton's laws, is the property of matter that resists changes in its motion.

Question 4

If a rocket is expelling gases in one direction, the reaction force that propels the rocket forward is an illustration of one of Newton's Laws of Motion. Which one?

Group of answer choicesFirst Law of Motion

Second Law of Motion

Third Law of Motionquestion 5

Question 5

The image below shows an object being thrown down somewhere on Planet Earth. The distances are not shown to scale, but the numbers are correct. Imagine that air resistance is almost negligible (insignificant) for this object. What is the velocity (v) in meters per second (m/s) of the missing value (marked as ?) that corresponds to a time (t) of 1 second?

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d

Question 6

Bonus Question:

Imagine you are indoors and you drop a dollar bill and a coin at the same time with no initial impulse. Try doing this in real life. Make sure that both objects start in the horizontal (flat) position and you are giving them enough space to move freely. Which one reached the floor first? What happens when both objects are dropped inside a container that contains no air? What physical concept causes this difference?