When considering gravity acceleration and the force of acceleration, what must be true? Question 9 options: A) The direction of acceleration must be perpendicular to the direction of the force. B) The direction of the force and the direction of acceleration must be opposite of each other. C) The mass of the body must be the same as the acceleration of the body. D) The direction of the force and the direction of acceleration must be the same as each other.

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver

Happiness is to senipah as 517768399 is to what?