An object has a kinetic energy of 254 J and a momentum of magnitude 23.2 kg · m/s. (a) Find the speed of the object. m/s (b) Find the mass of the object. kg

3. John is performing an experiment in a Uwindsor lab. In this lab, John has two toy car's of mass m1 and m2 connected together to form a car of mass m whose velocity is v. While traveling a force causes these car's to separate, with the heavier car being at rest as a result. If John notes the kinetic energy of the moving car is 28 mv 2 what is the mass of the moving car? А. 0.018m В. 5.1m C. 0.011m D. 0.028m Е. 0.11m

A pitcher claims he can throw a 0.142-kg baseball with as much momentum as a 2.88-g bullet moving with a speed of 1.50 ✕ 103 m/s. (a) What must the baseball's speed be if the pitcher's claim is valid?

At a particular instant, a moving object has a kinetic energy of 276 J and a momentum of magnitude 22.1 kg · m/s. (a)What is the speed (in m/s) of the object at this instant?   (b)What is the mass (in kg) of the object at this instant?