HI, Can anyone explain in detail, Why Bicycle is not falling while riding and whereas in Ideal it falls imm.

calculate the magnitude and direction of the resultant of 2 forces A and B acting on a point object A=3N along y axis B=2N across x axis 45 degree angle in between them 300g of water at 20 degrees celsius is placed in a freezer. How much heat energy must be removed in order to freeze it...

Who Created Physics

How far will a stone travel over level ground if it is thrown upward at an angle of 30 degrees with respect to the horizontal and with a speed of 30 m/s? What is the maximum range that can be achieved if a stone is thrown with an initial speed of 24 m/s?

What is the average speed, if a person drives for 30.0 min at 80.0 km/h, 12.0 min at 100 km/h, and 45.0 min at 40.0 km.h and spends 15.0 min eating lunch and buying gas? The back of my textbook states that the answer is 52.9, but I don't know how to solve it!!