GCSE Physics - Gravity, Weight and GPE #3

The video tutorial explains gravity as a force of attraction between objects, influenced by their mass and distance. It covers the concept of gravitational fields and how weight is calculated by multiplying mass with gravitational field strength. The tutorial also introduces gravitational potential energy, calculated using mass, gravitational field strength, and height. An example calculation is provided to illustrate these concepts. The video concludes with a recap of key takeaways, emphasizing the differences between mass and weight, and the formulas for weight and gravitational potential energy.

What determines the strength of the gravitational force between two objects?

• The speed of the objects

• The temperature of the objects

• The color of the objects

• The mass of the objects and the distance between them

How is weight defined in physics?

• The force of attraction on an object in a gravitational field

• The volume of an object

• The mass of an object

• The density of an object

What is the gravitational field strength on Earth?

• 15 Newtons per kilo

• 1.6 Newtons per kilo

• 9.8 Newtons per kilo

• 20 Newtons per kilo

What is the formula for calculating gravitational potential energy?

• EP = MGH

• EP = MG/H

• EP = M/GH

• EP = M+GH

If an apple with a mass of 0.1 kg is thrown 3 meters up, what is its gravitational potential energy?

• 1.94 Joules

• 4.94 Joules

• 2.94 Joules

• 3.94 Joules