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 formula for weight?

Weight is the gravitational force acting on a mass. It comes from how gravity pulls on the object, so it depends on both how heavy the object is (its mass) and how strong gravity is (g). That’s why weight equals mass times g, written as W = m × g. On Earth, g is about 9.8 m/s^2, so weight is in Newtons. The other forms describe different ideas: F = ma is a general statement that force causes acceleration, not specifically gravity; W = mv is momentum, not weight. So the expression W = m g correctly captures weight as the gravity-induced force on a mass.

Weight is the gravitational force acting on a mass. It comes from how gravity pulls on the object, so it depends on both how heavy the object is (its mass) and how strong gravity is (g). That’s why weight equals mass times g, written as W = m × g. On Earth, g is about 9.8 m/s^2, so weight is in Newtons.

The other forms describe different ideas: F = ma is a general statement that force causes acceleration, not specifically gravity; W = mv is momentum, not weight. So the expression W = m g correctly captures weight as the gravity-induced force on a mass.