Angelina drives 26 m/s. She sees the cars Diagra in front of her slowing down and locks
the brakes until her car reaches 19 m/s.
The mass of the car is 1200 kg. Calculate
the energy lost to friction

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.