the graph below shows the velocity versus time graph for an object moving in a straight line. at what time after t=0 does the object again pass through its initial position

What the heck r u talkin bout? ?

Answer///(d) atoms contain small,negatively charged particles;

Each student aligns the edge of the object with the left edge of the ruler as shown above. all four students read the ruler with a measurement of 4.6 cm. which statement describes the data they collect? i believe the answer is: the data have poor precision and poor accuracy because of a systematic error.