**Question:** The momentum of a particle is P⃗ =2costî+ 2sintj. What is the angle between the force ̂ F acting on the particle and the momentum P⃗

(A) 65°

(B) 90°

(C) 150°

(D) 180°

**Answer:** option (B)

**Solution:**

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**Question:** The momentum of a particle is P⃗ =2costî+ 2sintj. What is the angle between the force ̂ F acting on the particle and the momentum P⃗

(A) 65°

(B) 90°

(C) 150°

(D) 180°

**Answer:** option (B)

**Solution:**