4. (1) What is the weight of a 76 kg astronaut (a) on Earth, () on the Moon (8 = 1.7 m/s"). (c) on Mars (8 = 3.7 m/s),
(d) in outer space traveling with constant velocity?

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a. m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).