of Pay12, In an imaginary atmosphere, the air exerts a small forceF on any particle in the direction of the particle's motionA particle of mass m projected upward takes a time t.in reaching the maximum height and t, in the returnjourney to the original point. Then(a)t, <t, (b) , > t, (c) t, = t; (d) the relation betweent, and t, depends on the mass of the particle.

of Pay12, In an imaginary atmosphere, the air exerts a small forceF on

1.	of Pay12, In an imaginary atmosphere, the air exerts a small forceF on any particle in the direction of the particle's motionA particle of mass m projected upward takes a time t.in reaching the maximum height and t, in the returnjourney to the original point. Then(a)t, <t, (b) , > t, (c) t, = t; (d) the relation betweent, and t, depends on the mass of the particle.
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