Education Technology

# Activities

• ##### Subject Area

• Science: Physical Science: Newton's Laws
• Science: Physics: Dynamics

6-8

60 Minutes

• ##### Device
• TI-73 Explorer™

TI Connect™

• ##### Accessories

CBL™/CBL 2™
Sensor - Motion Detector
TI Connectivity Cable

• ##### Other Materials
This is Activity 7 from the EXPLORATIONS Book:
Activities for Middle Grades Science with the CBL 2™ and TI-73.

The following materials are required for this activity:
• Vehicle (toy car or truck)
• Ramp

## How Fast was that Truck Going Anyway?

#### Activity Overview

In this activity, students' will use a Motion detector to measure how far a vehicle rolling down a ramp travels in a given time. They will use mathematical formulas to calculate the vehicle's speed, velocity, and acceleration.

#### Before the Activity

• Connect the motion detector into the DIG/SONIC channel of the CBL 2
• See the attached PDF file for detailed instructions for this activity
• Print pages 57 - 62 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to your class.

• Assemble a ramp and position the motion detector
• Roll the vehicle in a straight line down the ramp and measure the distance covered in 5 seconds
• Conduct three trials in the same manner
• Graph the data and record the distance for each one-second interval
• Graph average speed versus time
• Calculate the vehicle's velocity and acceleration
• #### After the Activity

Students' will complete Student Data Collection and Analysis Sheet.

Review student results

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary