Truck A has a mass of 5000 kg and a velocity of + 5m/s. Explain why we say truck B has a velocity of - 5m/s.

Earth's magnetic poles; A. are visible from space B. are aligned with the equator C. are not the same as geographic poles

Of these choices, where would the most reactive nonmetal on the periodic table be located? A.) Group 14, period 2 B.) Group 14, period 5 C.) Group 17, period 2 D.) Group 17, period 5

A 20 kg mass is dropped from a tall rooftop and accelerates at 9.8 m/s2. What is the weight of the dropped object?

A 9.4 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.

What are three changes in motion show that an object is accelerating

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?

What are the SI units for specific heat capacity