comment on the statement ‘rest and motion are relative terms’. give an example. - concept of force and pressure: motion
comment on the statement ‘rest and motion are relative terms’. give an example.
imagine you are sitting inside a moving bus. when you look outside you will observe that you are moving. now look to the roof of the bus. with respect to the roof of bus, you are at rest. hence it is concluded that rest and motion are relative terms.
physics 101 notes: 8/25 (week 2 continued)  force o defined as a push or a pull, and is a vector quantity, meaning that it has direction depending on which way it is being pushed or pulled o it has amount and direction (how much force is being applied and in which direction it is moving)  newton’s first law o first draft: “an object that is free of forces move in a straight line and covers equal distances in equal time” o final: “an object that is free of external forces moves at a constant velocity”  how does a skater start, stop, or turn? o acceleration: “the rate at which an object’s velocity is changing with time o acceleration, s applying and factorization, we get, also changing by reversing n and dnote: - try to factorize that term which help in reducing expression. want, regard, praise, include, push, buy, warm, pay attention, let go, encourage, permit, admit, allow, support, flatter, compliment, accept, sanction, approve, release, socialize, respect, be friendly, use, heat, welcome, note. coefficient of friction is defined as the ratio of the force of friction acting between two objects and the force which is pushing them together. the value of the coefficient of friction varies from zero to one. there are two types of the coefficient of friction: static coefficient of friction kinetic (also known as sliding) coefficient of friction. therefore, the coefficient of friction depends on the nature of the surface. chemistry 1010 study guide classify the following properties as intensive or extensive: intensive- doesn’t change (boiling point, temp, color, density, hardness) extensive- changes in size/ amount (volume, mass length scientific method terms experiment: a well-controlled procedure used to obtain data in order to describe a phenomenon. law: a statement that describes natural phenomenon by summarizing collected facts. observation: a statement describing a natural phenomenon that we sense. scientific fact: a statement that is explained by reproducible experimental data hypothesis: guesses that is not verified yet. mass and weight mass is a measurement of the quantity of matter in an object, whereas weigh is a measurement of the force of gravity on the matter of an object; ther when a volleyball player smashes a ball, he changes the speed as well as direction of the ball. this is a change of state of motion. however, a change in state of motion is said to occur also when either of the two changes individually. technical vocab – phil 1010 lecture 2 key: terms – \_\_\_ topics – \_\_\_ important – \_\_\_  what is an argument? o arguments are statements that represent an inference. o premises are statements that support a conclusion.  what is an inference? o inferences are thoughts that we believe is true.  inferences can take place conscious or unconsciously. o inferences are implicit while arguments are explicit. o implicit thoughts are implied, suggested, or understood but not directly expressed. o explicit thoughts are usually overly expressed.  sentences & statements o sentences are grammatically correct string of words. o declarative sentences can be either true or fa trueexplanation: physical balance is very sensitive and used in labs for measuring. it is similar to beam balance. it can measure small differences in mass up to milligram. we are asked to complete the sentence. [readmore]a law reliably predicts the behavior of matter, while a theory provides an explanation for that behavior. direction: a word and number arrangement machine when given an input line of word and numbers rearranges them following a particular rule in each step. the following is an illustration of input and rearrangement. input: politics 61 policy 116 partner 93 role 45 clear 27 38 point step i: role politics policy 116 partner 93 45 clear 27 38 point 61 step ii: role clear politics policy partner 93 45 27 38 point 116 61 step iii: role clear partner politics policy 93 45 38 point 27 116 61 step iv: role clear partner politics policy 93 38 point 45 27 116 61 step v: role clear partner politics point policy 93 38 45 27 116 61 step v, is the last step of the above arrangement as the intended arrangement is obtained. as per the rule followed in the given steps find out the appropriate steps for the given input. input: energy 54 78 place 23 issue 211 145 flat rent taxi 17in step iii, what is the difference between fifth element from left and second element from right?