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Question 18 (1 point) Listen Which of the following is a vector quantity? Speed Energy Mass O Velocity Question 19 (1 point) Listen In rectangle ABCD, X and Y are midpoints of AB and AD respectively. If @ = AX and b = AY , then XC' is equal to: Obj 7 + 26 Question 20 (1 point) Listen Volume is a Vector and scalar quantity Neither scalar or vector quantity Scalar quantity OVector quantity