Afancart of mass 0.8 kg initially has a velocity of < 0.9, 0, 0 > m/s. then the fan is turned on, and the air exerts a constant force of < -0.3, 0, 0 > n on the cart for 1.5 seconds. what is the change in momentum of the fancart over this 1.5 second interval? = < , 0, 0 > kg

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

What is the magnitude of the resultant vector round your answer to the nearest tenth

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?