Consider the helix r(t) (cos(8t), sin(8t), 4t). Compute, at t klo A. The unit tangent vector T B. The unit normal vector N C. The unit binormal vector B A body of mass 4 kg moves in a (counterclockwise) circular path of radius 8 meters, making one revolution every 5 seconds. You may assume the circle is in the xy-plane, and so you may ignore the third component A. Compute the centripetal force acting on the body. B. Compute the magnitude of that force. Note: Use exact forms or at least 4 significant digits in your answers. Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. Email Instructor A projectile is fired from ground level with an initial speed of 450 m/sec and an angle of elevation of 30 degrees. Use that the acceleration due to gravity is 9.8 m/sec (a) The range of the projectile is meters. (b) The maximum height of the projectile is meters. (c) The speed with which the projectile hits the ground is m/sec. Note: