Download presentation

1
**Speed, Velocity, and Acceleration**

Chapter 5

2
Speed Distance traveled divided by the time it takes to travel that distance Speed = distance time Sample units: m/s, km/h, km/s, m/h If a car travels 30 km in 5 hours, what was the car’s speed?

3
**Velocity Speed of an object in a specific direction**

To calculate velocity you would use the formula for speed and then include the direction in which the object is traveling

4
**Is this a speed or velocity measurement?**

A car traveled at 10 km/hr. A plane traveled north at 48,000 km/hr. A cheetah ran 5 km/hr north and then turned around and headed south.

5
**Calculate Speed A marathon runner completed 10 km in 2 hours.**

A car traveled 500 km in 6 hours. A cheetah ran 25 km in 5 hours. A plane traveled 1000 km in 10 hours.

6
**Calculate Average Speed**

Remember to use the complete distance and complete time. Average Speed = total distance total time A family takes a car trip. They travel 80 km in an hour. After a pit stop, they travel another 70 km in 2 hours. What is their average speed?

7
**Calculate Average Speed**

If a car travels 50 km in 3 hours and then travels another 100 km in 2 hours, what is the average speed of the car? If a train travels 150 km in 2 hours and then after it stops to pick up new passengers it travels another 200 km in 3 hours, what is the average speed of the train?

8
**An object accelerates if:**

Speed changes (faster or slower) Direction changes Both speed and direction change

9
**Are the following objects accelerating?**

A car goes 50 km/h to the north. A car changes its speed from 25 km/h to 100 km/h. An eagle travels at 25 km/h to the north and then turns around and flies south.

10
**Acceleration Acceleration is the rate of change of velocity over time**

Acceleration = final velocity - starting velocity time Sample units: m/s2, km/h2 Since acceleration is a change in velocity you have to include a direction

11
**Calculate Acceleration**

A cheetah traveling south accelerates from 20 m/s to 34 m/s in 7 seconds. An eagle traveling east accelerates from 15 m/s to 22 m/s in 4 seconds.

12
**Calculate Acceleration**

A car traveling to the west decelerates from 100 km/hr to rest in 2 hr. A cheetah running south goes from 40 m/s to rest in 5 seconds when it spots its prey.

Similar presentations

© 2020 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google