Motion — Flashcards
Madhya Pradesh Board · Class 9 · Science
20 flashcards for Motion (Madhya Pradesh Board Class 9 Science) to test yourself on key terms and facts. Sample: "What is the difference between distance"
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What is the difference between distance and displacement?
Answer
Distance is the total path length covered by an object (scalar quantity). Displacement is the shortest distance between initial and final positions in a specific direction (vector quantity). Distance …
Define uniform motion and give an example.
Answer
Uniform motion is when an object covers equal distances in equal intervals of time. The speed remains constant. Example: A car moving at a constant speed of 60 km/h on a straight highway, covering 60 …
What is non-uniform motion? Provide a real-life example.
Answer
Non-uniform motion occurs when an object covers unequal distances in equal intervals of time. The speed varies. Example: A car moving through city traffic - sometimes fast on clear roads, sometimes sl…
Define speed and write its formula.
Answer
Speed is the rate of motion of an object, defined as distance traveled per unit time. It is a scalar quantity. Formula: Speed = Distance/Time or v = s/t. SI unit: m/s or ms⁻¹…
What is velocity? How is it different from speed?
Answer
Velocity is the speed of an object in a specific direction. It is a vector quantity. Difference: Speed has only magnitude (scalar), while velocity has both magnitude and direction (vector). Velocity c…
Calculate average speed: A car travels 150 km in 3 hours.
Answer
Given: Distance = 150 km, Time = 3 hours Average speed = Total distance/Total time Average speed = 150 km/3 h = 50 km/h Therefore, the average speed is 50 km/h.
Define acceleration and write its formula.
Answer
Acceleration is the rate of change of velocity. It measures how quickly velocity changes with time. Formula: a = (v-u)/t, where v = final velocity, u = initial velocity, t = time. SI unit: m/s² or ms⁻…
What is uniform acceleration? Give an example.
Answer
Uniform acceleration occurs when velocity changes by equal amounts in equal intervals of time. The acceleration remains constant. Example: A freely falling object under gravity experiences uniform acc…
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