A ball of mass 0.7kg is moving with speed 17 ms-1 in a straight line when it is struck by a bat. The impulse exerted by the bat has magnitude 20 Ns and the ball is deflected through an angle of 90˚ as shown on the diagram. Find the acute angle of the direction of the impulse with the x-axis to 1 decimal place.
Via Arkuskosinus: https://www.matheretter.de/wiki/arkuskosinus
cos(a)=0.595
a = cos-1(0.595)
a ≈ 53,487
Siehe z. B. auch freies Video ab 02:50 min:
https://www.matheretter.de/wiki/trigonometrische-gleichungen
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