1.

The potential energy in joules of a particle of mass 1 kg moving in a plane is given by U = 3x + 4y, the position coordinates of the point being x and y, measured in metres. If the particle is initially at rest at (6, 4), then:

Answer»

its ACCELERATION is of magnitude `5 m//s^(2)`
its speed when it CROSSES they-axis is `10 m//s`
it crosses the y-axis `(x = 0)` at `y = -4`
it moves in a straight line passing through the origin (0, O)

ANSWER :A::B::C


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