Match the following vocabulary terms to their definitions. 1. density a proposed explanation for a scientific problem 2. matter
standard metric unit of mass 3. control standard metric unit of length 4. meter anything that has mass and occupies space 5. hypothesis the mass of a substance per unit volume 6. kilogram a quantity in an experiment that remains unchanged or constant
Density - the mass of a substance per unit volume Matter - anything that has mass and occupies space Control standard - a quantity that remains unchanged Meter - metric unit of length hypothesis - a proposed explanation for a scientific problem kilogram - metric unit of mass
<span>a proposed explanation for a scientific problem: hypothesis </span><span>standard metric unit of mass: kilogram </span><span>standard metric unit of length: meter </span><span>anything that has mass and occupies space: matter </span><span>the mass of a substance per unit volume: density </span><span>a quantity in an experiment that remains unchanged or constant: control</span>
When there are two bodies, a and b, whose velocities measured by a third observer (in this case, the ground) are and respectively, the relative velocity of B with respect to A is given by:
Thus, the velocity of the girl relative to the lawnmower is:
