For general projectile motion, when the projectile is at the highest point of its trajectoryGroup of answer choicesits acceleration is zero.none of theseits velocity is perpendicular to the acceleration.the horizontal component of its velocity is zero.its velocity and acceleration are both zero.the horizontal and vertical components of its velocity are zero.
Question
For general projectile motion, when the projectile is at the highest point of its trajectoryGroup of answer choicesits acceleration is zero.none of theseits velocity is perpendicular to the acceleration.the horizontal component of its velocity is zero.its velocity and acceleration are both zero.the horizontal and vertical components of its velocity are zero.
Solution 1
For a general projectile motion, when the projectile is at the highest point of its trajectory:
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Its acceleration is not zero. The acceleration due to gravity is always acting on the projectile, regardless of its position in the trajectory.
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Its velocity is perpendicular to the acceleration. At the highest point, the velocity of the projectile is entirely horizontal, while the acceleration (gravity) is acting downwards. These two vectors are perpendicular to each other.
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The horizontal component of its velocity is not zero. The horizontal velocity remains constant throughout the flight (assuming no air resistance).
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Its velocity and acceleration are not both zero. As mentioned before, the acceleration due to gravity is always present.
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The horizontal and vertical components of its velocity are not both zero. At the highest point, the vertical component of the velocity is zero (since it's not moving up or down at that instant), but the horizontal component is not zero.
So, the correct answer is: its velocity is perpendicular to the acceleration.
Solution 2
For a general projectile motion, when the projectile is at the highest point of its trajectory:
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Its acceleration is not zero. The acceleration due to gravity is always acting on the projectile, regardless of its position in the trajectory.
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Its velocity is perpendicular to the acceleration. At the highest point, the velocity of the projectile is entirely horizontal, while the acceleration (gravity) is acting downwards. These two vectors are perpendicular to each other.
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The horizontal component of its velocity is not zero. The horizontal velocity remains constant throughout the flight (assuming no air resistance).
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Its velocity and acceleration are not both zero. As mentioned before, the acceleration due to gravity is always present.
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The horizontal and vertical components of its velocity are not both zero. At the highest point, the vertical component of the velocity is zero (since it's not moving up or down at that instant), but the horizontal component is not zero.
Similar Questions
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