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① The magnitude and direction of the acceleration of the uniform speed change linear motion are invariable ① It must be right ② Is it right or wrong? If it is wrong, isn't it contradictory with (1)?
2 is wrong, it needs any equal in the same time. It is not arbitrary, but some are not complete
The acceleration direction of an object moving in a straight line with constant speed change is the same as that of the velocity change
Is that right? Please give me a reply as soon as possible
That's right
The direction of acceleration may be different from the direction of velocity, but it must be the same as the direction of velocity change. Acceleration itself is a physical quantity reflecting the law of velocity change
Is the direction of acceleration and the direction of velocity change always the same for an object moving in a straight line with constant speed change?
Could you be more specific, why are they the same? Or why are they different?
It is proved that there is acceleration only in the direction of velocity and the opposite direction of velocity, and the uniform deceleration motion should be considered. At this time, the direction of velocity and acceleration is opposite
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