Arugby player passes the ball 7.88 m across the field, where it is caught at the same height as it left his hand. (assume the player is facing the +x direction.) (a) at what angle (in degrees counterclockwise from the +x-axis) was the ball thrown if its initial speed was 13.1 m/s, assuming that the smaller of the two possible angles was used? ° counterclockwise from the +x-axis (b) what other angle (in degrees counterclockwise from the +x-axis) gives the same range? ° counterclockwise from the +x-axis

Explanation:

Given

Range of ball =7.88 m

Initial speed=13.1 m/s

and we know

Range of Projectile is

(b)other angle would be complementary of

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it is called kinetic energy