A 2-kg book falls off a shelf. it hits a student traveling 2 m/s. how much kinetic energy does the book have?

A player throws a football 55.0 m at 61.0° north of west. The westward component of the displacement of the football thrown is given by A) 0 m. B) 74.0 m. C) 26.7 m. D) 64.7 m.

Use the terms scientific law and theory in a sentence

How close can people get to a lion that's wild and untrained

Which one of the following is a double-displacement reaction? A.) 2Li (s) + ZnSO4 (aq) → Li2SO4 (aq) + Zn (s) B.) HNO3 (aq) + KOH (aq) → H2O (l) + KNO3 (aq) C.) Fe (s) + CuSO4 (aq) → FeSO4 (aq) + Cu (s) D.) 2Cu (s) + O2 (g) → 2CuO (s)

A 10-ft ladder is leaning against a wall. If the top of the ladder slides down the wall at a rate of 2 ft/sec, how fast is the bottom moving along the ground when the bottom of the ladder is 5 ft from the wall

Give an examplea of newtons law of acceleration

The acceleration produced by a net force on a body is inversely proportional to the mass of the body. true or false

You throw a ball upward with an initial speed of 4.3 m/s. When it returns to your hand 0.88 s later, it has the same speed in the downward direction (assuming air resistance can be ignored).

Why are arrows of varying lengths used to represent forces?

At room temperature, most of the atoms of atomic hydrogen contain electrons that are in the excited states. A tube is filled with atomic hydrogen.