1. What is the kinetic Energy of a 1500kg object moving at 21 m/s? 2. A cat decides to jump down from the top of a bookshelf. It has 68 J of mechanical energy and 19 J of gravitational potential energy. What is the kinetic energy of the cat?

3. What is the kinetic energy of a 423 kg object moving at 14 m/s?

please i needed for grade

What happens to light waves from a star as the star moves away from earth?

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?