Understanding Forces: Pushes, Pulls, and Their Effects on Motion

The video tutorial explains the concept of forces, which can be a push or a pull, and their role in the motion of objects. It covers the measurement of forces in newtons and the use of a newton metre. The tutorial distinguishes between contact and non-contact forces, providing examples such as friction, drag, upthrust, and gravitational force. It also explains how to represent forces using diagrams, with arrows indicating the size and direction of forces. Various examples illustrate forces acting on different objects, such as planes, tennis balls, and boats. The video concludes with additional resources for further learning.

What unit is used to measure forces?

• Pascals

• Newtons

• Watts

• Joules

Which of the following is a contact force?

• Friction

• Magnetic force

• Gravitational force

• Electrostatic force

What is the force called that acts at 90 degrees when two objects are touching?

• Tension

• Thrust

• Drag

• Normal contact force

Which force does not require objects to be in contact?

• Drag

• Friction

• Tension

• Gravitational force

What is the force experienced between charged particles called?

• Thrust

• Tension

• Electrostatic force

• Magnetic force

In a force diagram, what does the size of the arrow represent?

• The speed of the object

• The size of the force

• The direction of the force

• The type of force

What force is responsible for pulling a plane backwards?

• Lift

• Tension

• Thrust

• Drag

Which force acts upwards on a person standing on the ground?

• Thrust

• Weight

• Normal contact force

• Drag

What force acts against the motion of a boat in water?

• Drag

• Tension

• Upthrust

• Thrust

How do force arrows show attraction between two opposite charges?

• By pointing away from each other

• By being parallel

• By pointing towards each other

• By being perpendicular