Question 1-the resultant of two vectors …

Question 1-the resultant of two vectors of magnitude p and 2P is perpendicular to the first <a href="https://www.embibe.com/learn/mathematics/chapter-vector-412">vector</a>. find the <a href="https://www.embibe.com/learn/physics/concept-angle-9428">angle</a> between the resultant and second vector

Question 2 - A cart is  with moving East speed 1 metre per second A man is walking on this cart with a velocity 2 metre per second  with respect to the cart while he moves he swings his left hand with a speed 4 metre per second due West with respect to him. a fly sitting on the man's hand moves with a velocity 6 metre per second due South with respect to the hand  .find the velocity of the fly as seen by a ground observer

Question 3 -As the angle between two forces of fixed magnitude is varied the greatest and the least value of resultant of two forces are 20 Newtons and 10 Newtons respectively. find the magnitude of the forces