just answers no work Multiple-Choice Homework Problem 16.1 [2 pt(s)____ ] What i
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just answers no work
Multiple-Choice Homework Problem 16.1 [2 pt(s)____ ] What is the effect of adding multiple vectors (in two dimensions) in different orders? (Will the end result of each combination be the same or different?) Is the same true for subtraction? Select One of the Following: (a) adding: same; subtracting: same. (b) adding: same; subtracting: different. (c) adding: different; subtracting: same. (d) adding: different; subtracting: different. (e) No way to know. Multiple-Choice Homework Problem 16.2 [2 pt(s) J You throw a ball in a high arc to get it over the defenders, to your waiting team mate. You can neglect air resistance, and the ceiling is really high. At the highest point in the ball?s flight: Select One of the Following: (a) all the components of velocity and the acceleration are zero. (b) all components of the velocity are non-zero and the acceleration is zero. (c) the horizontal component of velocity and the acceleration are both non-zero. (d) the vertical component of velocity and the acceleration are both non-zero. (e) all components of the velocity are zero but the acceleration is non-zero. Multiple-Choice Homework Problem 16.3 [2 pt(s)____] If an object moves in a straight line with constant velocity in one inertial reference frame, then it moves in a straight line in all inertial reference frames. Select One of the Following: (a) True (b) FalseExplanation / Answer
a)answer is b
adding will be same and substracting different
b)
As the ball travels upward its velocity will constantly decrease due to the downward effect of gravity acting on the ball. Eventually the velocity of the ball will reach a value of zero at the highest point of the ball's flight. Then the ball will start falling back to earth, gaining speed due to the influence of gravity on the ball. When the ball is moving upward, earth's acceleration due to gravity, 9.8 m/s/s is acting against the ball, while on the return to earth, that same 9.8 m/s/s is causing the velocity of the ball to increase.
Because the ball is moving in a parabolic motion, ignoring any effects due to air resistance and wind, the velocity of the ball when it returns to the starting point has the same magnitude,
so answer is a) componenet of velocity and accleration is zero
c)True
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