Question

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8. when the speed of the body in straight line changes continously then the body acquires
a)speed
b) velocity
c)acceleration
d) None
9. polystyrene resin identification code is
a)4
b)5
d)none
c) 6​

Answer 1

Answer:

8. The body acquires a certain speed at an instant. It may be a speed that's higher than the original one due to accelerating force or lesser than the original due to retarding force. Remember, the acceleration or retardation may be uniform or non-uniform.