¿Qué son la velocidad y la aceleración?

The video tutorial introduces the concepts of speed and acceleration, explaining their everyday relevance and technical definitions. It covers how speed is calculated, the difference between instantaneous and average speed, and how acceleration represents the rate of change in speed. The tutorial also demonstrates how to use graphs to visualize these concepts, emphasizing the importance of understanding these fundamentals for studying physics.

What is the primary difference between speed and acceleration?

• Speed is how fast an object moves, while acceleration is the change in speed.

• Speed is the distance covered in a unit of time, while acceleration is the time taken to cover a distance.

• Speed is the rate of change of acceleration, while acceleration is the rate of change of speed.

• Speed is a vector quantity, while acceleration is a scalar quantity.

How is speed technically defined?

• The rate of change of velocity.

• The change in distance over time.

• The distance traveled divided by the time taken.

• The time taken to travel a certain distance.

If a car travels 100 km in 2 hours, what is its average speed?

• 50 km/h

• 100 km/h

• 200 km/h

• 25 km/h

What is instantaneous speed?

• The speed of an object at a specific moment in time.

• The average speed over a journey.

• The total distance divided by the total time.

• The speed when an object is accelerating.

How is average speed calculated?

• By dividing the total time by the total distance.

• By calculating the speed at each moment and averaging them.

• By measuring the speed at the start and end of a journey.

• By dividing the total distance by the total time taken.

What does a steeper slope on a distance-time graph indicate?

• A constant speed

• No movement

• A slower speed

• A faster speed

What does a horizontal line on a speed-time graph represent?

• No speed

• Decreasing speed

• Increasing speed

• Constant speed