Q1 v Q2 Q3 Q4 Q5 Q6 Q7 Results Which of these situations involve non-contact forces? Select all correct answers Air resistance when running Gravity acting on the moon Snow falling to the ground A magnet attracting a nail

## Step 1: Understanding the problemIn this problem, we are asked to identify the situations which describe non-contact or field forces. Non-contact forces can act on an object without any physical contact, unlike frictional or gravitational forces, which require direct, physical contact. Situations that involve non-contact or field forces could be due to magnetic, electrostatic, or gravitational effects at a distance. ## Step 2: Evaluate each situation### situation: Air Resistance when runningThis is a result of contact between the air and a runner, thus it is not a non-contact force.### situation: Gravity acting on the moonGravity acts on all masses and can act over large distances, so this is a non-contact force.### situation: Snow falling to the groundThe movement of snowflakes towards the ground is due to the gravitational attraction between the snowflakes and Earth. Therefore, this is a non-contact gravitational force.### situation: A magnet attracting a nailThis situation describes a magnetic force, which is a non-contact force that acts at a distance.### situation: Pushing a bike up a hill When a bike is pushed up a hill, this is an example of a contact force. The force that causes the bike to move upwards is transmitted through direct contact.## Step 3: Concluding remarksTo wrap it up, the situations: "Gravity acting on the moon", "Snow falling to the ground", and "A magnet attracting a nail" are examples of non-contact forces.