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 dog is located on the north bank of a river that is 2 miles wide. His home is located on thesouth bank of the river, 5 miles to the east of where he is located now. In order to make ithome, he will run on land to a point P located along the north bank of the river, and thenswim across the river to his home. If the dog runs at a speed of 9 mi/hr across land, andswims at 4 mi/hr across the river, where should P be located to minimize the amount of timeit takes for the dog to return home?

On what the distance an object travels depend?

5. To turn a stubborn bolt, 80lb of force is applied to a 10in wrench, where the direction of applied force makes a 10° angle with the wrench. How much torque is subsequently applied to the wrench?