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.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?