# Physics

posted by .

A 0.559 kg particle has a speed of 2.7 m/s at point A and kinetic energy of 8.4 J at point B.
What is its kinetic energy at A?

• Physics -

(1/2) m v^2 = .5 * .559 * 2.7^2

## Similar Questions

1. ### physics kinetic energy

a) if a particle's speed decreases by a factor of four, by what factor does its kinetic energy change?
2. ### physic

please help, I really appriciate you help alot. Question:A 0.34 kg particle has a speed of 2.0 m/s at point A and kinetic energy of 7.5 J at point B. (a) What is its kinetic energy at A?
3. ### physics

A 2.10-g particle is released from rest at point A on the inside of a smooth hemispherical bowl of radius R = 28.0 cm. Calculate the following: (a) Its gravitational potential energy at A relative to J (b) Its kinetic energy at B. …
4. ### Physics

A 0.38-kg particle has a speed of 2.0 m/s at point A and kinetic energy of 7.5 J at point B. (a) What is its kinetic energy at A?
5. ### Physics

A 245 g particle is released from rest at point A inside a smooth hemispherical bowl of radius 35.0 cm, as shown in Figure 5-21. (a) Calculate the gravitational potential energy at A relative to B. 1 . (b) Calculate the particle's …
6. ### physics

A particle has a kinetic energy equal to its rest energy. (a) What is the speed of this particle?
7. ### Physics

A 0.568 kg particle has a speed of 1.57 m/s at point A and kinetic energy of 7.67 J at point B. What is its kinetic energy at A?
8. ### physics

A. A particle is traveling without friction up and down hills and valleys. If its initial potential energy is 6 J and its initial kinetic energy is 78 J, what is its total energy, E?
9. ### physics

A particle is traveling without friction up and down hills and valleys. If its initial potential energy is 85 J and its initial kinetic energy is 83 J, what is its total energy, E?
10. ### physics

A 278 g particle is released from rest at point A inside an smooth hemispherical bowl of radius 36.5 cm, as shown below. (a) Calculate the gravitational potential energy at A relative to B. J (b) Calculate the particle's kinetic energy …

More Similar Questions