Answer:
The collision occurs at a height of 1/3 of the total height of cliff.
Explanation:
The situation is represented in the attached figure:
For the stone dropped from top of cliff we have
Initial velocity of drop= 0 m/s.
Now the time at which it attains a velocity of 2v is obtained from first equation of kinematics as
Thus the distance it covers in this time can be calculated using third equation of kinematics as
For the stone thrown upwards the velocity at collision is give as 'v' thus the velocity at which it is thrown upwards can be calculated by first equation of kinematics as
The height over which it changes it's velocity from '3v' to 'v' can be again obtained from third equation of kinematics as
Thus the collision occurs at at a fraction of 1/3 of height.
Answer:
Content validity
Explanation:
Content validity refers to the fact that a study actually measures all aspects of the construct.
For a study to be valid, <u>the measurement method must cover all relevant parts of the subject it is measuring</u>. If it doesn't do so, then the validity of the study is treatment because of content validity.
In this case, the construct we are studying (quality of a relationship) has three parts (belong, interdependence and intimacy). Since <u>the questionnaire doesn't include items tapping intimacy it is not covering all three parts of the construct</u> and therefore it is lacking content validity.
No data of college men who reported of experiencing violent and abusive behaviors from someone they were dating. Only 43% of college women has a statistical data for experiencing violent and abusive dating relationship that includes verbal, physical, sexual, controlling and technology abuse. Meanwhile, others do not know how to identify dating abuse.
Answer:
July 26 1953-January 1st 1959 (5 years, 5 months and 6 days)
Explanation:
Answer:
b. keep the reader's attention until the reasons for the bad news have been explained
Explanation:
Indirect strategy is a method of writing where the author gives little hints of situations that will happen soon in the narrative, but will not be pleased by the reader, ie readers will be unhappy. Using the indirect strategy, the author keeps the reader's attention until the reasons for the bad news are explained.