The velocity of the projectile at its maximum height is:
Correct answer: B. Minimum
- A. Zero
- B. Minimum
- C. Maximum
- D. In between maximum and minimum
Explanation
In projectile motion, the velocity of a projectile can be broken down into horizontal and vertical components. At the maximum height, the vertical component of the velocity becomes zero, while the horizontal component remains unchanged. Therefore, the overall velocity is at its minimum at this point, which is why option B is correct. Option A is incorrect because the overall velocity isn't zero; only the vertical component is. Option C is incorrect because the maximum velocity occurs at the point of launch or impact, not at the maximum height. Option D is incorrect because the velocity is at its minimum when the vertical component is zero.
This question appeared on the ETEA MDCAT 2012 paper, which you can sit online with every answer explained.
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About Projectile Motion
Projectile motion combines uniform horizontal motion with vertically accelerated motion under gravity, assuming air resistance is neglected. Questions use the components of initial velocity to find time of flight, maximum height, horizontal range and position, while distinguishing projectile motion from general circular or one dimensional motion.
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