Lesson2: Understanding Motion 2

What is the difference between displacement and distance?

• Displacement measures speed, while distance measures time.

• Distance is always shorter than displacement.

• Displacement is the shortest distance between two points in a specific direction, while distance is the total length of the path traveled.

• Displacement is the total length of the path traveled, while distance is the shortest distance between two points.

How is speed defined, and how does it differ from velocity?

• Speed and velocity are interchangeable terms with the same definition.

• Velocity is a scalar quantity that measures speed in a specific direction.

• Speed is a scalar quantity representing distance over time, while velocity is a vector quantity representing displacement over time.

• Speed is a vector quantity representing distance over time.

Calculate the average speed of a car that travels 150 km in 3 hours.

• 30 km/h

• 50 km/h

• 75 km/h

• 100 km/h

What does a distance-time graph represent?

• A distance-time graph indicates the temperature changes over time.

• A distance-time graph shows the speed of an object.

• A distance-time graph shows how distance changes over time.

• A distance-time graph represents the direction of travel.

Describe the characteristics of uniform motion.

• Uniform motion requires acceleration at all times.

• Uniform motion involves changing speed and direction.

• Uniform motion involves constant speed and direction, with equal distances covered in equal time intervals.

• Uniform motion is characterized by varying distances in equal time intervals.

What is non-uniform motion, and how does it differ from uniform motion?

• Non-uniform motion is always faster than uniform motion.

• Uniform motion involves changing speed while non-uniform motion is constant.

• Non-uniform motion occurs only in circular paths.

• Non-uniform motion is motion with changing speed or direction, while uniform motion is motion at a constant speed in a straight line.

Explain the concept of relative motion with an example.

• Relative motion is the calculation of the motion of an object in relation to another object, which can vary based on the observer's frame of reference.

• Relative motion is the same as absolute motion regardless of the observer.

• Relative motion is the speed of an object without any reference point.

• Relative motion only applies to objects moving in the same direction.

If two trains are moving towards each other, how do you determine their relative speed?

• Subtract the speeds of both trains.

• Use the speed of only one train.

• Add the speeds of both trains together.

• Multiply the speeds of both trains together.

What is the significance of the slope in a velocity-time graph?

• The slope shows the speed of the object at a specific time.

• The slope indicates the direction of the object's motion.

• The slope indicates the acceleration of the object.

• The slope represents the distance traveled by the object.

How can you differentiate between positive and negative displacement?

• Positive displacement is when the object moves away from a reference point, while negative displacement is when it moves towards the reference point.

• Positive displacement occurs only in vertical motion.

• Negative displacement means the object is stationary.

• Displacement is only positive when speed is constant.