If you throw a cheeseburger deluxe at 10 meters per second with 5 J of KE, what is the mass of the cheeseburger?

What is the speed of a 0.22kg bullet if its KE is 440J?

A 50-kg object has 15,000J of KE. What is its speed?

A 750-kg compact car moving at 100km/hr has approximately 290,000J of KE. What is the KE of the same car moving at 50.0 km/hr?

The KE of a roller coaster is 200,000J in 20.0 m/s. What is the mass of the roller coaster?​