G8- T3L2: Speed, Velocity & Acceleration

On a distance-versus-time graph, the x-axis represents

• Motion

• Time

• Speed

• Distance

The slope of a line on a distance-versus-time graph represents

• Velocity

• Time

• Speed

• Distance

How can understanding velocity help to prevent a mid-air collision?

• By knowing the speed and direction of an object

• By increasing speed

• By reducing speed

• By changing direction

On a distance-versus-time graph, the y-axis represents

• Time

• Speed

• Distance

• Motion

The speed at which an object travels in a given direction is called

• Distance

• Speed

• Velocity

• Acceleration

To describe an object's velocity, you need to know both its speed and its direction. Speed in a given direction is

• Speed

• Distance

• Acceleration

• Velocity

If an object is not changing direction, you can describe its acceleration as the rate at which its speed changes. You calculate the change in speed per unit of time. What is the SI unit for acceleration?

• km/h2

• m/s

• km/h

• m/s2

The greater the number of meters per second, the faster the speed at which the object is traveling. Which of the following represents a faster speed?

• 35 m/s

• 5 m/s

• 15 m/s

• 25 m/s

To calculate the average speed of an object, divide the total distance traveled by the total time. What is the average speed if you travel 264 km in 4 hours?

• 50 km/h

• 66 km/h

• 80 km/h

• 100 km/h

The slope tells you how one variable changes in relation to the other variable in the graph. In other words, slope tells you the rate of change. What does a constant slope on a distance-versus-time graph represent?

• Constant speed

• Acceleration

• Deceleration

• Variable speed