A 50-kg bicyclist coasts up a hill. What is the cyclist change in kinetic energy as her altitude changes from 15m to 20m?

A) 0 joules

B) approximately 2,500 joules

C) approximately 7.500 joules

D) approximately 10.000 joules

Which of the following examples describes an increase in potential energy? a bicycle going down a hill a basketball falling through a net a roller coaster moving down the track a paint can being carried up a ladder

The length of a rectangular sheet of metal decreases by 34.5 cm. Its width decreases proportionally. If the sheets original width was half the original length and the new area of the sheet is 1.

A 0.299 kg mass slides on a frictionless floor with a speed of 1.44 m/s. The mass strikes and compresses a spring with a force constant of 44.9 N/m. How far does the mass travel after contacting the spring before it comes to rest?

a carbon steel ball with a 30mm diameter is pressed against a flat carbon steel plate with a force of 20n. calculate the diameter of the circular contact area and the maximum pressure that occurs at the center of the contact area

A solid ball has a radius of 2cm and a length of 7cm. It has a density of 3.1g/cm3 What is the mass of the cylinder?

What are some potential impacts to organisms during a global warming event?

There are 1000 g in every kilogram of a box has a mass of 483 g what is the mass of the box in kilogram

According to the map, which of the following cities had both a military and a POW camp nearby?

What does uniformitarianism tell us about processes at work on Earth's surface today?

A bad case of the tonsillitis can sometimes affect a persons breathing how possible