a particle is acted by force of constant magnitude whiich is always perpendicular to velocity of particle . the motion of the particle takes place in plane. it follws that:
(a)velocity constant
(b acceleration constant
(c)K.E constant
(d)straight line
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2 Answers
62The answer is constant kinetic energy...
The other three are easy to eliminate...
Foce is being acted.. so velocity has to change...
acceleration is not constant because the direction changes (since the direction fo the velocity changes)!
is it straight line.. no (cos the force is acting in a perpendicular direction.. so changing the direction of velocity) so the body cant be moving along straight line..
only 1 option remains.. (even that con be proved though!)
1KE CONSTTTTT
rest a,b are vectors whch change accordingly in dirn
it cnt be st line coz force changes the dirn