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Beai piojettl, the vertical compönent of a projectile\'s acceleration O continuo

ID: 1657193 • Letter: B

Question

Beai piojettl, the vertical compönent of a projectile's acceleration O continuously decreases O is zero. O remains a non-zero constant. O continuously increases. O any of the above, depending on position. QUESTION 15 For general prjectile motion, which statement is true when the projectile is at the highest point of its trajectory? O The horizontal component of its velocity is zero. O Its velocity is perpendicular to the acceleration. O The horizontal and vertical components of its velocity are zero. O Its velocity and acceleration are both zero. Its acceleration is zero. QUESTION 16 James and John dive from an overhang into the lake below. James simply drops straight down from the edge. John takes a ru jumps with an initial horizontal velocity of 25 m/s. Compare the time it takes each to reach the lake below. Cannot be determined without knowing the weight of both James and John. Click Save and Submit to save and submit. Click Save All Answers to save all answers.

Explanation / Answer

Question-15)

Correct choice is:

ITS VELOCITY IS PERPENDICULAR TO THE ACCELERATION

Because, at highest point, the vertical component of the velocity becomes zero and the horizontal component remains same through out the motion of the projectile. The only acceleration that it has is the acceleration due to gravity in the enture motio.

So at the highest point the horizontal velocity is perpendicular to the accleration(g) of the projectile.

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