Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

What is the unit for force (weight) in Newtons?

The main concept is that force has the unit Newtons. A Newton is defined as the force that gives a mass of 1 kilogram an acceleration of 1 meter per second squared (1 N = 1 kg·m/s²). Weight is a type of force—the gravitational pull on a mass—so it’s measured in Newtons. For example, weight is m×g, so a 1 kg mass weighs about 9.8 N on Earth. The other units are for different quantities: Joules measure energy, Amps measure electric current, and Watts measure power.

The main concept is that force has the unit Newtons. A Newton is defined as the force that gives a mass of 1 kilogram an acceleration of 1 meter per second squared (1 N = 1 kg·m/s²). Weight is a type of force—the gravitational pull on a mass—so it’s measured in Newtons. For example, weight is m×g, so a 1 kg mass weighs about 9.8 N on Earth. The other units are for different quantities: Joules measure energy, Amps measure electric current, and Watts measure power.