document.write( "Question 1199411: A projectile is fired at an angle of 30° to the horizontal with a velocity of 40ms-1. Calculate the velocity attained after 1sec.(g=10ms-2? \n" ); document.write( "

Algebra.Com's Answer #833282 by ikleyn(52787) $\"\"$ $\"About$

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\n" ); document.write( "A projectile is fired at an angle of 30° to the horizontal with a velocity of 40 m/s.
\n" ); document.write( "Calculate the velocity attained after 1 sec.(g = 10 m/s2)
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document.write( "At the starting moment, vertical velocity component is   = 40*sin(30°) =  = 20 m/s.\r\n" );
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document.write( "The time to get the maximum height is   =  =  = 2 seconds,\r\n" );
document.write( "under the given condition, so after 1 second the projectile is still moving up.\r\n" );
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document.write( "Vertical component of the velocity at t = 1 second is  \r\n" );
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document.write( "     =  = 20 - 10*1 = 10 m/s.\r\n" );
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document.write( "Horizontal component of the projectile is   = 40*cos(30°) =  m/s\r\n" );
document.write( "remains constant during the entire flight (till hitting the ground). \r\n" );
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document.write( "Thus the velocity attained after 1 second is\r\n" );
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document.write( "      V(t=1) =  =  =  =  = 36.055 m/s.   ANSWER\r\n" );
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