The video tutorial explains the concepts of speed and acceleration in physics. Speed is defined as the rate of change of distance, calculated using the formula speed equals distance divided by time. Examples are provided to illustrate speed calculations. Acceleration is introduced as the rate of change of speed, with examples demonstrating how to calculate it. The video also covers positive and negative acceleration, using speed-time graphs to explain these concepts. Viewers are encouraged to engage with the content by solving problems and subscribing for more educational videos.

How is speed defined in physics?

• The rate of change of velocity

• The rate of change of distance

• The rate of change of time

• The rate of change of acceleration

What is the standard unit of speed?

• Meters per second

• Kilometers per hour

• Miles per hour

• Feet per second

A car traveled 100 kilometers in 2 hours. What was its speed?

• 25 kilometers per hour

• 50 kilometers per hour

• 100 kilometers per hour

• 75 kilometers per hour

A sprinter runs 100 meters in 12.5 seconds. What is her speed?

• 9 meters per second

• 8 meters per second

• 7 meters per second

• 6 meters per second

How far will a jet traveling at 350 meters per second travel in 30 seconds?

• 10,500 meters

• 10,000 meters

• 11,500 meters

• 11,000 meters

What is acceleration defined as?

• The rate of change of direction

• The rate of change of time

• The rate of change of speed

• The rate of change of distance

Tags

NGSS.HS-PS2-1

A bus's velocity increased from 0 to 18 meters per second in 6 seconds. What is its acceleration?

• 5 meters per second squared

• 2 meters per second squared

• 3 meters per second squared

• 4 meters per second squared

Tags

NGSS.HS-PS2-1

A cheetah accelerates from 5 meters per second to 20 meters per second in 5 seconds. What is its acceleration?

• 4 meters per second squared

• 5 meters per second squared

• 3 meters per second squared

• 2 meters per second squared

Tags

NGSS.HS-PS2-1

What does a negative acceleration indicate?

• The object is speeding up

• The object is slowing down

• The object is moving at a constant speed

• The object is changing direction

Tags

NGSS.HS-PS2-1

What does the gradient of a line on a speed-time graph represent?

• Speed

• Distance

• Acceleration

• Time