How much energy or stopping power is needed to bring a car to a stop from 100 mph?

A small rock falling from the top of a 124-ft-tall building with an initial downward velocity of - 30 ft/sec is modeled by the equation h (t) = - 16t2 - 30t + 124, where t is the time in seconds.

Which is an indication that a chemical change to a substance has occurred? A. It changes shape. B. New substances are formed. C. Energy is used or given off. D. both B and C

Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. does anyone know witch of newtons laws this is?

Which of the following is most likely to be a secondary source? A. A scientific paper B. A scientific lecture C. A journal article D. A Magazine story

Which is not a difference between chemical reactions and nuclear reactions? A. The subatomic particles involved in the reaction is different. B. The amount of energy absorbed during the reaction is different. C.

A current of 6.0 A through a circuit for 2.5 minutes. how much charge was delivered to this circuit? 15 C 25 C 600 C 900 C

Two rubber bands pulling on an object cause it to accelerate at 1.2 m/s^2 ... a. What will be the object's acceleration if it is pulled by four rubber bands?. b.

Why do earthquakes and volcanoes occur along continent and ocean boundaries?

Why do different liquids have different viscosities?

A girl, standing on a bridge, throws a stone vertically downward with an initial velocity of 12.0 m/s, into the river below. If the stone hits the water 2.