Physics Question a) If an object has a mass of 250. kgs and a velocity of 3.50 m/s what is the objects kinetic energy?

b) If the object described above started from rest, what work was done on the object to obtain that final kinetic energy?

c) What is the units for the final answers of the two previous questions.

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

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.

Which two particles are found in the center of an atom