This is for my science class. A donut falls from a table and has a kinetic energy of 2 joules when it hits the floor. How much kinetic energy would it have had if it was twice the mass?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?