Physics, 09.11.2019 14:31 brandonthomas11

According to newton's second law of motion, if we we have a rigid, unchanging mass and we observe it accelerating, what must be happening?
a. a force is being applied to the mass
b. a force was once applied but is now not being applied
c. no force was or is being applied to the mass
d. the mass must be changing

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