PHYSICS GCSE EDEXCEL JUNE 2025 COMPLETE EXAM QUESTIONS WTH 100% ACCURATE SOLUTIONS ALREADY GRADED!!!

PHYSICS GCSE EDEXCEL JUNE 2025 COMPLETE EXAM QUESTIONS WTH 100% ACCURATE SOLUTIONS ALREADY GRADED!!! Distance - ANSWER the total length of the path travelled by an object, regardless of direction. It is a scalar quantity, meaning it only has magnitude, not direction. Scalar quantity - ANSWER A scalar quantity is a physical quantity that has magnitude only and no direction. Examples include speed, distance, time, mass, energy, and temperature. Scalars can be added and subtracted like regular numbers Vector quantity - ANSWER A vector quantity is a physical quantity that has both magnitude and direction. Examples include velocity, displacement, acceleration, and force. When working with vectors, direction must be considered during addition or subtraction Difference between scalar and vector quantities - ANSWER Scalars only have magnitude (e.g., 5 m), while vectors have both magnitude and direction (e.g., 5 m north). This affects how they are calculated and combined Velocity - ANSWER Velocity is a vector quantity that describes the speed of an object in a given direction. For example, 20 m/s east is a velocity. If the direction changes, the velocity changes even if the speed remains constant Equation for average speed - ANSWER average speed = distance ÷ time. This equation relates how far something has travelled (distance) to how long it took (time). The result is a scalar, not a vector f. Distance-time graphs - ANSWER On a distance-time graph, the gradient (slope) represents speed. A straight, diagonal line shows constant speed, a horizontal line shows the object is stationary, and a curved line shows acceleration or deceleration g. Acceleration equation - ANSWER acceleration = (final velocity - initial velocity) ÷ time This shows how quickly an object's velocity is changing. Units: m/s². This is a vector quantity because velocity includes direction h. SUVAT equation for motion - ANSWER v² - u² = 2as Where: v = final velocity u = initial velocity a = acceleration s = distance travelled This equation links speed, acceleration, and displacement in uniformly accelerated motion Velocity-time graph analysis - ANSWER The gradient of a velocity-time graph gives acceleration. The area under the graph gives the displacement. A horizontal line means constant velocity - a diagonal line shows increasing acceleration Practical methods for measuring speed - ANSWER Use light gates to measure time intervals precisely. Measure distance and divide by time to find speed. This is especially useful in laboratory setups like measuring falling objects or trolleys on ramps Typical speeds in everyday life - ANSWER Walking ≈ 1.5 m/s, Running ≈ 3 m/s, Cycling ≈ 6 m/s, Car ≈ 13-30 m/s, Sound in air ≈ 330 m/s. These are estimates and depend on conditions Acceleration due to gravity - ANSWER On Earth, the acceleration due to gravity is approximately 10 m/s². This means every second, a freely falling object increases its velocity by 10 m/s, ignoring air resistance What does a velocity-time graph show? - ANSWER It shows how an object's velocity (speed with direction) changes over time. The Y-axis represents velocity (m/s), and the X-axis represents time (s) What does a horizontal line on a velocity-time graph mean? - ANSWER A horizontal line means constant velocity. If it's above the x-axis, the object is moving at a constant positive speed. If it's at 0, the object is stationary What does a sloping line mean on a velocity-time graph? - ANSWER A positive slope (line going up) means acceleration. A negative slope (line going down) means deceleration (slowing down) What does a line below the x-axis represent? - ANSWER It means the object is moving in the opposite direction (negative velocity) How is acceleration shown on a velocity-time graph? - ANSWER The gradient (slope) of the line shows acceleration. The steeper the gradient, the greater the acceleration How do you calculate displacement from a velocity-time graph? - ANSWER Displacement = area under the graph line between two points in time. Use geometry (rectangles, triangles, or trapeziums) to calculate it Do you include the area below the starting velocity? - ANSWER Yes — if the velocity starts above 0 (e.g. 5 m/s), you must include the area under the full line down to the time axis. This includes the rectangle below and any triangle above if it's accelerating What is displacement? - ANSWER Displacement is a vector quantity that measures the shortest straight-line distance from the starting point to the final point, including direction How is displacement different from distance? - ANSWER Distance is a scalar (only magnitude), while displacement is a vector (magnitude and direction). For example, if you walk 5 m forward and 5 m back, your distance is 10 m, but your displacement is 0 Example of calculating displacement with changing velocity - ANSWER If velocity increases from 5 to 10 m/s over 4 seconds: Rectangle area = 4 × 5 = 20 m Triangle area = ½ × 4 × (10 − 5) = 10 m Total displacement = 30 m