7. (-/1 Points] DETAILS Consider the following. U = 2i + 5j, v = 8i + 7j mer (a) Find the projection of u onto v. (b) Find the vector component of u orthogonal to v. (-/1 Points] DETAILS MY NOTES PRACTICE ANOT A car is towed using a force of 1400 newtons. The chain used to pull the car makes a 21° angle with the horizontal. Find the work done in towing the car 9 kilometers. (Round yo answer to one decimal place.) km-N Need Help? Read it Watch It