Astronauts in space weigh themselves by oscillating on a spring. Suppose the position of an oscillating 75 kg astronaut is given by x = 10.30 m2 sin1(p rad/s) * t2, where t is in s. What force does the spring exert on the astronaut at (a) t = 1.0 s and (b) 1.5 s? Note that the angle of the sine function is in radians

Physics 101 Notes: 8/25 (Week 2 continued) Force o Defined as a push or a pull, and is a vector quantity, meaning that it has direction depending on which way it is being pushed or pulled o It has amount and direction (how much force is being applied and in which direction it is moving) Newton’s First law o First draft: “an object that is free of forces move in a straight line and covers equal distances in equal time” o Final: “an object that is free of external forces moves at a constant velocity” How does a skater start, stop, or turn o Acceleration: “the rate at which an object’s velocity is changing with time o Acceleration, s