To qualify to run in the 2005 boston marathon, a distance of 26.2 miles, an 18-year-old woman had to have completed another marathon in 3 hours and 40 minutes or less. a) to qualify, what must a woman's average speed have been in miles per hour? b) to qualify, what must a woman's average speed have been in meters per second? there are 1609 m in a mile.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.