please solve A) 4.00 m B) 2.54 m C) 5.62 m D) 29.3 m E) 12.1 m motion. The time
ID: 1785770 • Letter: P
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A) 4.00 m B) 2.54 m C) 5.62 m D) 29.3 m E) 12.1 m motion. The time to-O s 9. The figure below shows the trajectory of a ball undergoing projectile to the the initial velocity, is corresponding the velocity The other two points along the trajectory are also indicated in the figure which are of the ball at the peak () at ti and the velocity of the ball at the moment just as st as the ball is launched from position xu 0 m and y- 0 m. Its launch velocity, also called kes the ground (F) at th How do the speeds ve. vi 'z at corresponding times ta ti ti compare? peak height yi Or max range x2 or R 0 0 initial position (to yo) Distance Downrange a #2 pencil thrown up into the air, which of the following best describes the horizontal compo ne 10. For a pencil's acceleration? A) The horizontal component of a pencil's acceleration continually decreases. B) The horizontal component of a pencil's acceleration initially decreases and then increases. C) The horizontal component of a pencil's acceleration is zero. D) The horizontal component of a pencil's acceleration continually increases. E) The horizontal component of a pencil's acceleration remains a nonzero constant.Explanation / Answer
9.) we can clearly say that see from work energy theorem that kinetic energy at initial point is equal to kinetic energy at final point hence, vo=v2
moreover since the horizontal motion of the body is unaccelerated hence its horizontal velocity remains unchanged and at maximum hieght it will have velocity equal to its horizontal component, i.e, v1=vocos(theta) , hence v1<v0
the only option satisfying this answer is option C
10.) There is no acceleration in horizontal direction hence option C is correct
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