During a race, both cars have a mass of 1000 kg. Car A is traveling at 40 m/s while car B is moving at 37 m/s. If car A rear-ends car B, how fast do they move if they stick together?

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

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?

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system