An object at rest is suddenly broken apart into fragments a and b by an explosion. the fragment a acquires three times the kinetic energy of the fragment b. part a what is the ratio of their masse

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up