Question

Мяч падал на землю с высотой 3 м и был пойман после отскока на высоте 70 см. Определите путь и перемещение мяча

Answer 1

Путь:
L = 3+0,70 = 3,70 м

Модуль перемещения:
S = 3 - 0,70 = 2,30 м

Answer 2

Given Information:

- The ball fell from a height of 3 m. - The ball was caught after bouncing at a height of 70 cm.

Path of the Ball:

The path of the ball can be divided into two parts: the downward path and the upward path after bouncing.

1. Downward Path: - The ball fell from a height of 3 m. - The distance traveled during the downward path is equal to the initial height of the ball, which is 3 m.

2. Upward Path: - After bouncing, the ball reached a height of 70 cm (0.7 m). - The distance traveled during the upward path is equal to the difference between the initial height and the height after bouncing, which is 3 m - 0.7 m = 2.3 m.

Therefore, the total path of the ball is the sum of the distances traveled during the downward and upward paths: - Total path = Downward path + Upward path - Total path = 3 m + 2.3 m = 5.3 m.

Displacement of the Ball:

The displacement of an object is the straight-line distance between its initial and final positions.

1. Downward Displacement: - The ball fell from a height of 3 m. - The downward displacement is equal to the initial height of the ball, which is 3 m.

2. Upward Displacement: - After bouncing, the ball reached a height of 70 cm (0.7 m). - The upward displacement is equal to the height after bouncing, which is 0.7 m.

Therefore, the total displacement of the ball is the difference between the initial and final positions: - Total displacement = Final position - Initial position - Total displacement = 0.7 m - 3 m = -2.3 m.

Note: The negative sign indicates that the displacement is in the opposite direction of the initial motion.

Summary:

- The path of the ball is the total distance traveled by the ball, which is 5.3 m. - The displacement of the ball is the straight-line distance between its initial and final positions, which is -2.3 m.

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