A2kg wooden block whose initial speed is 3 m/s slides on a smooth floor for 2 meters before it comes to a
stop.
mg=20
-how much force would be needed to keep the block moving at a constant speed across the floor?

we can calculate the answer by following steps;

Explanation:

answer; ///i believe that the correct answer is (45*) at a 45 degree check first good

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.