An object is undergoing free fall motion. As it falls, the object\'s __. a. spee
ID: 1630010 • Letter: A
Question
An object is undergoing free fall motion. As it falls, the object's __. a. speed increases b. acceleration increases c. both of these d. none of these Renatta Oyle is again found driving her '86 Yugo down Lake Avenue, leaving the following trail of oil drops on the pavement. If her car is moving from right to left, then.. a. her velocity has a rightward direction and her acceleration has a rightward direction. b. her velocity has a rightward direction and her acceleration has a leftward direction. c. her velocity has a leftward direction and her acceleration has a rightward direction. d. her velocity has a leftward direction and her acceleration has a leftward direction Roll a bowling ball off the edge of a table. As It falls, its horizontal component of velocity___. a. decreases b. remains constant c. Increases At what point in its path is the vertical component of the velocity of a non-horizontally thrown projectile the smallest? a. The instant it is thrown. b. Halfway to the top. c. At the lop. d. As it nears the top. e. It is the same throughout the path. A projectile is launched at an angle of 15 degrees above the horizontal and lands down range. For the same speed, what other projection angle would produce the same range? a. 30 degrees. b. 45 degrees. c. 50 degrees. d. 75 degrees e. 90 degrees A football Is kicked Into the air at an angle of 45 degrees with the horizontal. At the very top of the ball's path, Its velocity is____. (Neglect the effects of air resistance.) a. entirely vertical b. entirely horizontal c. both vertical and horizontal d. not enough Information given to know.Explanation / Answer
All of your answers are Correct.
1.
acceleration remains constant and equal to g, it's velocity increase by the formula
Vf = Vi + a*t
Vf = 0 + g*t
Vf = g*t
2.
since the distance between oil drops is increasing, So the car is accelerating in the leftward direction.
3.
In projectile motion, horizontal velocity remains constant since there is no acceleration in the horizontal direction.
4.
At the top of projectile motion, vertical velocity is zero, so it will be lowest at top.
5.
projectile motion remains same for launching angle of A and (90 - A), So for 15 deg and (90 - 15 = 75 deg) projectile motion will be same.
6.
At the top of projectile motion, vertical component of velocity is zero, So velocity will be entirely horizontal.