# An Object Fired.........

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• May 4th 2008, 06:30 AM
sa87uk
An Object Fired.........
An object is fired from the ground with a velocity of 500 m/s at 30 to the horizontal. Calculate
a) the horizontal range;
b) the greatest height it reaches;
c) the time taken to rise to the greatest height.

thanks in advance
• May 4th 2008, 07:15 AM
galactus
You can use the general formulas for max height and range.

max height: $\frac{(v_{0}sin(\alpha))^{2}}{2g}$

Range: $\frac{(v_{0}^{2}sin(2\alpha))}{g}$

$v_{0}=500, \;\ {\alpha}=30, \;\ g=9.8$
• May 4th 2008, 07:36 AM
sa87uk
thank you