Download presentation

Presentation is loading. Please wait.

Published byColten Stowell Modified over 2 years ago

2
Any moving object that has mass, has kinetic energy. = kinetic energy (J) m = mass (kg) v = speed (m/s) Kinetic energy is energy due to motion. The kinetic energy of an object varies directly as its mass. So, for example, if you double the mass of an object, its kinetic energy will double. The kinetic energy of an object varies directly as the square of its speed. This is a “direct squared” relationship! So, for example if you double the speed of an object, its kinetic energy will increase by a factor of four.

3
Practice Problems p. 179 4) Calculate the kinetic energy of an electron with a mass of 9.11 x 10 -31 kg moving at a uniform speed of 2.00 x 10 5 m/s. 1.82 x 10 -20 J 5) A small toy moving horizontally at a uniform speed of 2.2 m/s has a kinetic energy of 18 J. Calculate the mass of the toy. 7.4 kg 6) A baseball with a mass of 300 g has a kinetic energy of 304 J. Calculate the speed of the baseball. 45.0 m/s 7) A moving toy with a mass of 7.4 kg has a kinetic energy of 18 J. Calculate the speed of the toy. 2.2 m/s

4
read pages 179 – 181 B2.3 Check and Reflect page 182 #’s 1 – 7, 10

Similar presentations

OK

WORK AND ENERGY. POTENTIAL ENERGY An object can store energy as the result of its position Potential energy is the stored energy possessed by an object.

WORK AND ENERGY. POTENTIAL ENERGY An object can store energy as the result of its position Potential energy is the stored energy possessed by an object.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on nokia company profile Ppt on waves tides and ocean currents lab Ppt on federalism in india Ppt on surface area and volume for class 9th Ppt on linear equations in two variables 6th Run ppt on html Ppt on ascending and descending order of numbers Ppt on pi in maths cheating Download ppt on palm island dubai Ppt on seasons for grade 2