1 quả cầu đặc đường kính 8cm có khối lượng 0,25kg lăn không trượt trên một mặt phẳng nằm ngang với 1 vận tốc 4 vòng/s.Động năng quả cầu là

Luke and carrie are driving down a straight section of the interstate at 70 mph in luke's new convertible. carrie is drinking a soda in the passenger seat. when she is done she tosses the bottle straight up in the air, just above the height of the car. what will happen to the bottle if air resistance is neglected? a. the bottle will land in carrie's lap. b. not enough information is given. c. the bottle will land on the interstate in front of the car. d. the bottle will land on the interstate behind the car.

Which two objects have the greatest gravitational force acting between them

In order to place a satellite into orbit, it requires enough fuel to supply the necessary mechanical energy. into what types of mechanical energy does the fuel get transformed?