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A child throws a rock from ground level. Air resistance is negligible. What is the maximum...

A child throws a rock from ground level. Air resistance is negligible. What is the maximum horizontal distance the rock could travel, if the rock has a maximum initial velocity of 2.04 m/s?

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Answer #1

If a par is projected at fixed speed, it will travel the furthest horizontal distance if it is projected at an angle of 45° to the horizontal. This is because the maximum sin2a can be is 1 and sin2a = 1 when a = 45°.

Horizontal range for a projectile motion is

here, angle is 45 degrees, u = 2.04 m/s, g = 9.8m/s^2

So,  the maximum horizontal distance the rock could travel is 0.4242 m. Ans.

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