on a horizontal frictionless surface a block of mass m is
1) On a horizontal frictionless surface, a block of mass M is sliding along on constant velocity v. A block of mass m lands on top of the original block. What is the velocity of the new system (M+m)?
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1 on a horizontal frictionless surface a block of mass m is sliding along on constant velocity v a block of mass m
1 consider a spring handing vertically from a ceiling attached to a mass m of 2 kg the spring constant k is 30 nm the
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Question: What do we call the degree to which an assessment measures the hypothetical behavior that it claims to measure?