10. A car of mass 1 tone is brought to rest from a speed of 40 m/s in a distance of 80 m. Find the
braking force of the car assuming that it is constant and that there is a constant resistance to
motion of 100 N
[9900 N]

What is the final velocity of the initial velocity of 25 and -50?

The air that we breath is made mostly of which gaseous molecule

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?