MATH 230 Midterm: Test 2 review

45 views5 pages

Document Summary

1: find the curvature of the curve ~r(t) = h2 sin t, 3t, 2 cos ti when t = . At t = 0 the body is at the origin and has velocity 4j. (a) what is the position of the body when t = . 2 ? (b) what is the position of the body when t = : batman drives his rocket powered car over the edge of a cli . His initial position at the edge of the cli is p = (0, 80). His initial velocity vector is v(0) = 16i. Projectile motion, more curvature, tangential and normal compo- nents of acceleration: a ball is thrown at an angle of 45o to the ground. If the ball lands 90 m away, what was the initial speed of the ball: a canon is red with an angle of elevation of 45 degrees. The speed of the canonball as it leaves the muzzle is 128 f t/sec.