Is crumbeing a sheet of paper phcsail or chemical change

What is the momentum of a car with a mass of 9kg and a velocity of 2m/s? Do not write units in your answer. Round to the nearest whole number.

Two dart guns both shoot the same darts. One is noted to shoot its dart with a velocity 4 times greater than the other dart gun. How would the kinetic energy of the darts coming out of the faster gun compare to that of the weaker gun?

What type of heat transfer occurs when particles bump into each other? A. Convection B. Insulation C. Thermal Conduction D. Thermal Radiation

an object of mass 0.5kg at rest, started to fall aheigh of 180cm from the surface of earth. it's momentum when it reaches the earth's surface is

Which of the following is a balanced chemical equation?

How does an iron nail become a rusty nail

What is the velocity of a bullet train that moves 400 meters west over 3 minutes anad 20 seconds?

While in empty space, an astronaut throws a ball at a velocity of 12 m/s. what will the velocity of the ball be after it has traveled 6 meters?

Which of the following statements are true? (Select all that apply.) Ammeters have a relatively high resistance and are placed in parallel with a resistor. Ammeters have a very low resistance and are placed in series with a resistor.

If a boulder has a weight of 675,000 N what is it's mass