The video tutorial covers the concepts of speed, velocity, and acceleration. It explains how speed is the rate of motion, defined as distance over time, and provides examples and units. Velocity is described as speed with a direction, using vectors to indicate direction. Acceleration is any change in motion, including speeding up, slowing down, or changing direction, with examples provided. The tutorial concludes with a summary of the differences between these concepts.

What is the primary difference between speed and velocity?

• Speed is measured in meters, while velocity is not.

• Velocity includes direction, while speed does not.

• Speed is a scalar quantity, while velocity is not.

• Velocity can only be calculated in a vacuum.

What is the formula for calculating speed?

• Speed = Distance / Time

• Speed = Distance + Time

• Speed = Distance x Time

• Speed = Time / Distance

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NGSS.MS-PS3-1

Which unit is not used to measure speed?

• Seconds per meter

• Miles per hour

• Kilometers per hour

• Meters per second

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NGSS.MS-PS3-1

What additional element does velocity require compared to speed?

• Direction

• Distance

• Time

• Acceleration

Which of the following is an example of velocity?

• 20 miles per hour

• 50 km/h north

• 30 m/s

• 100 km/h

What does acceleration measure?

• The rate of change of time

• The rate of change of velocity

• The rate of change of speed

• The rate of change of distance

Which unit is used to measure acceleration?

• Seconds per meter squared

• Kilometers per hour squared

• Meters per second squared

• Meters per second

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NGSS.MS-PS2-2

What type of acceleration occurs when a car is slowing down?

• Neutral acceleration

• Static acceleration

• Positive acceleration

• Negative acceleration

Which example does not demonstrate acceleration?

• A car stopping at a red light

• A bicycle speeding up

• A ball being thrown upwards

• A train moving at a constant speed

How are speed, velocity, and acceleration different?

• Speed and velocity require direction, acceleration does not.

• Speed does not require direction, but velocity and acceleration do.

• All three concepts are essentially the same.

• Speed and acceleration do not require direction, but velocity does.