A projectile is launched from a point on level ground with initial speed 21.2 miles/hour and...
A projectile is launched from a point on level ground with initial speed 21.2 miles/hour and initial angle of 30 degrees. Air resistance may be ignored and normal earth gravity is present. Calculate the magnitude of the final value of the horizontal component of velocity in m/s just prior to the projectile striking the ground. [Note: Don't forget to convert units as needed.]
Homework Answers
Initial speed , u= 21.2 miles/hr at 30 deg
Convert miles/hr to m/s
1 miles/hr =0.44704 m/s
u =9.45 m/s at 30 deg
initial horizontal velocity component ,
=================
There is no acceleration in horizontal direction, so horizontal velocity remains constant
Final value of horizontal velocity =Initial value of horizontal velocity
ANSWER: 
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