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The potential energy U in joule of a par...

The potential energy U in joule of a particle of mass 1 kg moving in x-y plane obeys the law `U = 3x+ 4y`, where (x,y) are the co-ordinates of the particle in metre. If the particle is at rest at (6, 4) at time t = 0, then

A

The particle has constant acceleration

B

the work done by external force from the position of rest of the particle and the instant at which the particle crossign x-axis is 25 joule

C

the speed of the particle when it corsses the y-axis is 10 m/s

D

the co-ordinates of the particle at time t=4S are (-18m,-28m)

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A, B, C, D
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