Question

Select One Option Correct from the following : A particle moves in thex-yplane under the influence of a force such that its linear momentum is $\vec{p}(t) = A(\hat{i} \ cos \ kt- \hat j \ sin \ kt)$ ,where Aandkare constants. The angle between the force and the momentum is
(A) $0^{\circ}$
(B) $30^{\circ}$
(C) $45^{\circ}$
(D) $90^{\circ}$

Answer 1

c option is correct.
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Answer 2

Select One Option Correct from the following : A particle moves in thex-yplane under the influence of a force such that its linear momentum is $\vec{p}(t) = A(\hat{i} \ cos \ kt- \hat j \ sin \ kt)$ ,where Aandkare constants. The angle between the force and the momentum is

(A) $0^{\circ}$

(B) $30^{\circ}$

(C) $45^{\circ}$

✔️ (D) $90^{\circ}$