Answer:
It is 3 m/s² downward.
Explanation:
The mass of an object, m = 30 kg
Upward force, F = 200 N
Downward force, F' = -300 N
We need to find the magnitude and direction of its acceleration.
Net force = F+F'
= 200+(-300)
= -100 N
We know that,
Force, F = ma, a is acceleration of the object

Hence, the acceleration is -3 m/s² and it is acting in the downward direction.
No sorry, wish I could help
Answer:
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Two examples of where you can find permanent magnets are
1.compass
2.speakers