Rose is riding her bike at 10.0 m/s when she slams on her brakes. She stops in 2.0 seconds. Assume that the total mass is 70.0 kg. Calculate the frictional force required to stop the bike.

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Select all the correct answers. which three statements about electromagnetic radiation are true?