According to newtons's first law, which characteristic of a moving object would remain constant if there were no other force of acting of it? a. size b. mass c. shape d. speed

D. Speed

Explanation:

According to Newton’s first law of motion a body at rest will continue to be at rest until acted upon by some external force. Similarly a body in motion will continue to move in an uniform motion until acted upon by another force. The external force will change the uniform velocity or speed of the object causing it to either accelerate or decelerate.

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the millers tale is the answer.