Energy from fast moving particles that will produce heat is

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?

What is the largest meteoroid that has collided with this planet

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.