Download presentation

Presentation is loading. Please wait.

Published byGarry Hutchinson Modified over 5 years ago

1
In Motion: A Physics Unit I love physics, but I hate moving.

3
Work with both vector and scalar quantities Describe differences of distance and displacement Recognize interval and instant Describe differences of speed and velocity

4
VelocitySpeedDisplacement PositionDistance Origin ∆ (delta) Scalar Vector InstantInterval Key Words

5
To describe movement you must have two things: Origin Position Origin – a reference (start) point, where we begin to take measurements from. Position – the location an object is found away from the Origin.

6
Distance is the total travel of the object, regardless of the path or direction. Δ d = 3 cm Origin Position It is a scalar value - it is given only as a number for its size with a unit.

7
Displacement is the overall change in position of an object. It is a vector quantity and must be given with a number for its size, a unit and a DIRECTION. ∆d = 3 cm Origin Position +

8
The formula for Displacement is found by the final position minus the initial position A change in any quantity is found by final minus initial values. ∆d = d 2 - d 1 initial position (origin) final position delta means “change in” vector

9
A toy car begins at -1 cm. If the car stops at +3 cm, calculate the distance and displacement of the car. d 1 = -1 cm d 2 = +3 Position ∆d = 4 cm+ Δ d = 4 cm Origin ∆d = d 2 - d 1 ∆d = (+3) - (-1)

10
Draw a number line to show a car moving from a start of +2 cm and stops at the -3 cm mark. Find the displacement of the car. Origin Position ∆d = 5 cm - d 1 = +2 cm d 2 = -3 ∆d = d 2 - d 1 ∆d = (-3) - (+2)

11
If you walked around this block, what would your Distance be? ∆ d = 100 m 100 m Δ d = 300m Your Displacement would be? [East] 100 m

12
Instants and Intervals of Time

13
In physics, Time occurs two ways: An instant of time is a reading at a particular, precise moment. An interval of time is total amount of time between two instants. Interval = instant 2 - instant 1

14
∆ t = t 2 - t 1 Instant or interval of time is a SCALAR quantity. scalar “change in” Interval final instant initial instant

15
d = d 2 - d 1 t = t 2 - t 1

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