The position of the front bumper of a test car under microprocessor control is given by x1t2 = 2.17 m + 14.80 m> s 2 2t 2 - 10.100 m> s 6 2t 6 . (a) find its position and acceler- ation at the instants when the car has zero velocity.

Atomic nuclei of almost all elements consist of

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Distinguish between linear momentum and angular momentum