Download presentation

Presentation is loading. Please wait.

1
**Conceptual Physics 11th Edition**

Chapter 3B: LINEAR MOTION

2
Free Fall Falling under the influence of gravity only - with no air resistance Freely falling objects on Earth accelerate at the rate of 10 m/s/s, i.e., 10 m/s2 (more precisely, 9.8 m/s2).

3
Free Fall—How Fast? The velocity acquired by an object starting from rest is So, under free fall, when acceleration is 10 m/s2, the speed is 10 m/s after 1 s. 20 m/s after 2 s. 30 m/s after 3 s. And so on.

4
**Free Fall—How Fast? CHECK YOUR NEIGHBOR**

A free-falling object has a speed of 30 m/s at one instant. Exactly 1 s later its speed will be the same. 35 m/s. more than 35 m/s. 60 m/s. 4

5
**Free Fall—How Fast? CHECK YOUR ANSWER**

A free-falling object has a speed of 30 m/s at one instant. Exactly 1 s later its speed will be the same. 35 m/s. more than 35 m/s. 60 m/s. The object gains 10m/s after every second. So, at a given instance, if its speed is 30m/s, then a second later it will be 10m/s greater than that i.e. 30m/s + 10m/s = 40m/s So, Its speed a second later is 40m/s which is more than 35m/s. Explanation: One second later its speed will be 40 m/s, which is more than 35 m/s. 5

6
Free Fall—How Far? The distance covered by an accelerating object starting from rest is So, under free fall, when acceleration is 10 m/s2, the distance is 5 m/s after 1 s. 20 m/s after 2 s. 45 m/s after 3 s. And so on.

7
**Free Fall—How Far? CHECK YOUR NEIGHBOR**

What is the distance covered of a freely falling object starting from rest after 4 s? 4 m 16 m 40 m 80 m 7

8
**Free Fall—How Far? CHECK YOUR ANSWER**

What is the distance covered of a freely falling object starting from rest after 4 s? 4 m 16 m 40 m 80 m Explanation: Distance = (1/2) x acceleration x time x time So: Distance = (1/2) x 10 m/s2 x 4 s x 4 s So: Distance = 80m 8

Similar presentations

Presentation is loading. Please wait....

OK

Acceleration Chapter 3 Section 1.

Acceleration Chapter 3 Section 1.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on introduction to object-oriented programming with c++ Ppt on surface area and volume of cube cuboid and cylinder Ppt on meeting etiquettes meaning Ppt on garden of five senses Ppt on solar system for class 8 Ppt on chromosomes and genes middle school Ppt on remote operated spy robot with camera Ms ppt online Ppt on nutrition in plants and animals Ppt on linear equations in two variables class 9