By conservation of momentum,
(900 kg) (15.0 m/s) i + (750 kg) (20.0 m/s) j = (900 kg + 750 kg) v
where v is the velocity vector of the combined cars. Solve for v :
(13,500 i + 15,000 j) kg•m/s = (1650 kg) v
v ≈ (8.18 i + 9.09 j) m/s
Then the direction of v relative to East is θ such that
tan(θ) ≈ 9.09/8.18 ⇒ θ ≈ 48.0°
so the wreckages would move at approximately 48.0° north of east.
Answer:
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Explanation:
The phrases from each of the sentences are most likely:
- <u>Participial phrase
</u>
- <u>Infinitive phrase
</u>
- <u>Gerund phrase</u>
- A participial phrase is the collection of words in a sentence which is made up of a participle, and a modifier. They perform various functions in a sentence such as being either the objects, or adding extra meaning to the word.
- An infinitive phrase is a group of words which has an infinitive and also gives extra information about another word.
- A Gerund phrase is a collection of words which has a gerund and another word which modifies a word. Some examples include: "Biking is such a fun sport".
- An infinitive is a word that usually begins with a verb "to + extra word" for example, to eat, to walk, etc.
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