flashcard notes based on the WJEC GCSE Physics unit 2 topic of Newton's Laws --based on the 2025/26 spec --made for StMikes
| Front | what is Newton's first law? |
| Back | an object will either remain at rest or move with a constant speed in a straight line (constant velocity) unless acted on by a resultant force |
| Front | in what direction is acceleration (relative to resultant force)? |
| Back | acceleration is always in the same direction as the resultant force |
| Front | explain the changes in speed of a skydiver until they deploy their parachute |
| Back | after jumping from the helicopter, weight is the only force acting on them, causing them to accelerate.as they gains speed, the force of air resistance acting against them gets stronger and stronger.when the air resistance is equal to their weight, the resultant force acting on them is zero, so they fall at a constant speed (terminal velocity) |