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Home Q & A Board Science-Related Homework Help Physics
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nutcake852 nutcake852
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11 years ago
A projectile fired horizontally over level ground falls to the ground in 2 s. If it had been fired with twice the speed in the same horizontal direction, it would also have hit the ground in 2 s. Explain why.
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wrote...
#1
11 years ago
yes, it would have .

The acceleration of gravity is 9.8 m/sec^2.

regardless of the initial forward speed, gravity acts on the projectiles at the same rate.
wrote...
#2
11 years ago
When a projectile is fired,its horizontal velocity does not change.However its  vertical velocity changes due to acceleration due to gravity.It's  y-axis component changes.Hence it will fall back to ground.(ucos0= v = constant).
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