A rifle with a longer barrel can fire bullets with a larger velocity than a rifle with a shorter barrel. a) Explain this using the impulse-momentum theorem. b) Explain this using the work-energy theorem

15) A 328-kg car moving at 19.1 m/s in the + x direction hits from behind a second car moving at 13 m/s in the same direction. If the second car has a mass of 790 kg and a speed of 15.

Why does water have a high surface tension? Hydrogen bonding keeps water molecules close together. Water is a liquid at room temperature. Water molecules contain 18 electrons. The lengths of the bonds in water molecules can change.

Photoelectric effect definition

As the velocity of the sound source approaches the speed of sound, the wave fronts ahead of the object begin to appear as: a-separately distinguishable waves b-a single wave front c-cylindrical d-a cone shape shockwave.

How many categories of hurricanes are there

How can you make gravity smaller and bigger

What is friction and explain

How does the velocity, the distance it has fallen and the acceleration of a free falling body change with time?

Woman pulls a 6.87 kg suitcase, initially at rest, with a 29.2 N force along the handle at 57.7º. Friction pulls back at 12.7 N, and the suitcase moves 5.93 m. What is its final speed? (Unit = m/s)

Suppose you know a golf ball's horizontal velocity and the time it has traveled through the air. how could you calculate how far the ball traveled