Exploring Motion: Speed, Velocity, and Acceleration

This video tutorial covers the concepts of speed, velocity, and acceleration in the context of motion. Speed is defined as the rate at which an object covers distance over time, with a formula of speed equals distance divided by time. Velocity is similar to speed but includes direction, making it a vector quantity. Acceleration is the rate of change of velocity, indicating how quickly an object speeds up or slows down. The video provides examples and formulas for calculating these measurements, helping viewers understand the differences and applications of each concept.

What is the formula for calculating speed?

• Speed = Distance + Time

• Speed = Distance * Time

• Speed = Distance / Time

• Speed = Time / Distance

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If Usain Bolt runs 100 meters in 9.6 seconds, what is his average speed in meters per second?

• 9.6 m/s

• 96 m/s

• 10.4 m/s

• 100 m/s

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What distinguishes velocity from speed?

• Velocity includes distance.

• Velocity includes time.

• Velocity includes direction.

• Velocity includes acceleration.

Which of the following represents a velocity?

• 50 m/h

• North 50 m

• 50 m/h North

• 50 seconds North

What does acceleration tell us about an object's motion?

• The direction of motion

• The distance covered

• How quickly the velocity is changing

• The time taken to travel a distance

What is the formula for calculating acceleration?

• Acceleration = (Final Velocity + Initial Velocity) / Time

• Acceleration = Final Velocity / Initial Velocity

• Acceleration = (Initial Velocity - Final Velocity) / Time

• Acceleration = (Final Velocity - Initial Velocity) / Time

If an object starts at rest and reaches a velocity of 15 m/s in 6 seconds, what is its acceleration?

• 3.0 m/s²

• 1.5 m/s²

• 2.0 m/s²

• 2.5 m/s²

What unit is used to measure acceleration?

• s/m

• m/s

• s²/m

• m/s²

If an object changes its direction while maintaining the same speed, what happens to its acceleration?

• It changes

• It increases

• It decreases

• It remains the same

What happens to the acceleration if you slow down quickly?

• It increases

• It remains constant

• It decreases

• It becomes zero