A medicine ball has a mass of 5kg and is thrown with a speed of 3 m/sec what is it's kinetic energy

Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference