A ball is launched from the ground vertically into the air with a speed of 10 m/s. Calculate the speed of the ball the moment it returns to the ground.

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Answer to a math question A ball is launched from the ground vertically into the air with a speed of 10 m/s. Calculate the speed of the ball the moment it returns to the ground.

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Sigrid

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120 Answers

1. Initial speed of the ball,

u = 10 \, \text{m/s}

.
2. Using the conservation of energy and the symmetry of projectile motion, the ball will have the same speed when it returns to the ground.
3. Therefore, the final speed

v = u = 10 \, \text{m/s}

.

Answer:

v = 10 \, \text{m/s}

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2x-y=5 x-y=4