What’s the kinetic energy of the roller coaster at the top and bottom of the hill? use . a kiddie roller coaster car has a mass 100 kilograms. at the top of a hill, it’s moving at a speed of 3 meters/second. after reaching the bottom of the hill, its speed doubles. the car’s kinetic energy at the bottom is its kinetic energy at the top. the car has joules of kinetic energy at the bottom of the hill.

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?