4.
There are two conclusions that can be drawn when an object is at rest:
(a) No force is acting on it.
(b)
Complete the second condusion.
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the absence of any forces, no force is required to keep an object moving. ... Remember, the forces act on different objects. ... From Newton's second law, we can calculate it as mass times the acceleration ...
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(a) Here, a=0,
S=ut+21at2=21ar2 (u=0)
∴a=t22S
In this way acceleration is increasing. Follow the below table.
b) Since, acceleration is increasing. So net unbalanced force is acting on the object.
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