Which of these statements are correct?
A ball with a velocity of 10 m/s at an angle of 30 degrees with the horizontal has a vertical velocity of 5 m/s.
A ball thrown up at 10m/s from a height of 5 m will strike the ground 1 second later.
A ball thrown up at 10m/s from a height of 15 m will strike the ground 3 seconds later.
A ball with a velocity of 10 m/s at an angle of 30 degrees with the horizontal has a horizontal velocity of 5 m/s.
The vertical component of a vector is found by multiplying the total vector by the cosine of the angle.
A boy walks 9 m west and then 12 meters north, the magnitude of the displacement is 15m.
Answers: 2
Biology, 22.06.2019 12:50, xxbriannahollandxx
Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.
Answers: 1
Biology, 22.06.2019 13:10, mroueh21
Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed
Answers: 2
Which of these statements are correct?
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