A car of mass 1750 kg moving at 20 m/s to the north, rearends a truck of mass 7000 kg that is moving in the same direction at 5 m/s. The vehicles stick together after the impact. What is the velocity of the wreck after the collision?

The “death throes” of stars are amongst the most complex phenomena in all of astronomy, and the “corpses” of stars amongst the most energetic and exotic objects in existence. beginning at the end of the core helium fusion stage in a star’s life, describe in detail the post-main sequence development of both (a) a 1.0 solar mass star, and (b) a 25.0 solar mass star. in what significant ways do they differ? what role does each of these types of stars play in the "star-gas-star" cycle and the evolution of chemical elements in our galaxy?

What object a collides with object b and bounces back its final momentum is?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical