During these three intervals, when was the object’s speed highest? do not confuse the speed with the velocity.
1. during interval i
2. same speed during intervals ii and iii
3. during interval iii
4. during interval ii
5. same speed during each of the three intervals.

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?