Scarlett is analyzing a position-time graph of a moving train. Which quantity can be found by measuring the slope of a line that is tangent to a point on the graph? average velocity
O displacement
o instantaneous velocity
O acceleration

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answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

it is a negative acceleration