题目

MUF0121 Physics Unit 1 - Semester 2, 2025 3.13 Projectile motion

多项填空题

Question textA basketball is thrown through the air and follows the dotted path shown. The ball is shown at three different points: Low, Medium and Top. The ball's speed is fastest at the position marked Answer 1 Question 4[select: , Top, Medium, Low]. At the medium height point the direction of the ball's velocity is Answer 2 Question 4[select: , A, B, C, D, E, F, G, H]. At the top point the direction of the ball's velocity is Answer 3 Question 4[select: , A, B, C, D, E, F, G, H].

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标准答案

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思路分析

To analyze the motion, imagine the ball following the curved path from Low up to Medium and then Top, as shown. Option 1: The statement that the ball’s speed is fastest at the Low position. In projectile motion, the speed is highest where the ball has the greatest kinetic energy, which occurs at the lowest point of the trajectory where gravitational potential energy is minima......Login to view full explanation