12) According to the law of conservation of energy,
A)
an object loses most of its energy as friction.
B)
the total amount of energy for a system stays the same.
the potential energy of an object is always greater than its kinetic energy.
D)
the kinetic energy of an object is always greater than its potential energy.
Answer

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Which of the following is an example of motion in two dimensions?