Speed:the distance an object travels per unit of time

Speed:the distance an object travels per unit of time

Speed = distance / time

Average speed = total distance / total time

Solve: A whitetail deer runs 33 meters in 3 seconds.What is its speed?

How do you know this boat is in

motion?

How do you know this boat is in

motion?

What can be used as a reference point?

What can be used as a reference point?

VelocityVelocity This occurs when you know both

the speed and direction of an object’s motion.

In other words: Speed in a given direction.

Example 25 km/h East

This occurs when you know both the speed and direction of an object’s motion.

In other words: Speed in a given direction.

Example 25 km/h East

Velocity and AccelerationVelocity and AccelerationVelocity and AccelerationVelocity and Acceleration

How does the running back show both

speed and acceleration?

How does the running back show both

speed and acceleration?

AccelerationAcceleration The change in velocity/speed per unit of

time Three conditions: Increase in speed

Decrease in speed Change in direction

The change in velocity/speed per unit of time

Three conditions: Increase in speed

Decrease in speed Change in direction

Formula: Final speed – Initial speed / Time

AccelerationAcceleration

Units of MeasurementUnits of Measurement

Time - s or hr Distance -cm, m, km Speed - m/s, km/hr Velocity - m/s North, Acceleration - m/s2, km/hr2

Time - s or hr Distance -cm, m, km Speed - m/s, km/hr Velocity - m/s North, Acceleration - m/s2, km/hr2

SolveSolve A family takes a trip. They travel for an hour at 50 km/hr and then for

two hours at 25 km/h. What is their average speed?

Mike’s skateboard accelerates from 6 m/s to 48 m/s in 6 seconds. What is his rate of acceleration?

A football player threw a football 60 m through the air. While in flight, the ball traveled an average speed of 25 m/s. How long did the ball stay in the air?

How far can a turtle travel if its speed is 20 m/hr and its time is 1.5 hr?

A family takes a trip. They travel for an hour at 50 km/hr and then for two hours at 25 km/h. What is their average speed?

Mike’s skateboard accelerates from 6 m/s to 48 m/s in 6 seconds. What is his rate of acceleration?

A football player threw a football 60 m through the air. While in flight, the ball traveled an average speed of 25 m/s. How long did the ball stay in the air?

How far can a turtle travel if its speed is 20 m/hr and its time is 1.5 hr?

This graph shows the motion of a helicopter. Use this graph to answer the questions for “Slide 9”

This graph shows the motion of a helicopter. Use this graph to answer the questions for “Slide 9”

Use this graph to answer the questions on “Slide 10”

Use this graph to answer the questions on “Slide 10”