A particle is moving with a constant acceleration of 4.0 m/s. Its speed at t = 1.0 s is 4.0 m/s and at 3.0 s it is 12.0 m/s. What is the area under the position-time graph for the interval from 1.0 s to 3.0 s?

. west

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

resonant frequency

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.