Sunday

December 21, 2014

December 21, 2014

Posted by **SAM** on Sunday, January 30, 2011 at 5:46pm.

What is the speed with which your friend threw the ball?

- physics -
**Damon**, Sunday, January 30, 2011 at 5:50pmThe same speed with which it hit the ground.

v = g t

v = 9.8 m/s^2 (.9 seconds) = 8.8 m/s

- physics -
**SAM**, Sunday, January 30, 2011 at 6:30pmLearning Goal: To learn to read a graph of position versus time and to calculate average velocity.

In this problem you will determine the average velocity of a moving object from the graph of its position as a function of time . A traveling object might move at different speeds and in different directions during an interval of time, but if we ask at what constant velocity the object would have to travel to achieve the same displacement over the given time interval, that is what we call the object's average velocity. We will use the notation to indicate average velocity over the time interval from to . For instance, is the average velocity over the time interval from to .

Find the average velocity over the time interval from 1 to 3 seconds.

Express your answer in meters per second to the nearest integer.

**Answer this Question**

**Related Questions**

College Physics - Bob has just finished climbing a sheer cliff above a beach, ...

Physics based Calculus - Bob has just finished climbing a sheer cliff above a ...

Physics - You drop a 1.60 kg book to a friend who stands on the ground at ...

Physics Correction - You drop a ball from a window on an upper floor of a ...

physics - You stand at the edge of a cliff, holding a ball out over the edge. ...

Math - Marsha hits a tennis ball upward from the top of a 90 foot high cliff ...

physics - You and two friends are on top of the library 30 m above the ground. ...

physics - A ball is thrown horizontally off the edge of a cliff with an initial ...

Physics - A ball is thrown horizontally at 20 m/s from the top of a cliff 50 ...

Physics - Q1-a stone is thrown upwards into the what is the magnitude and ...