Un niño de 25 kg corre por un jardín con una velocidad de 2.5 m/s de forma que su trayectoria es tangente al borde de un carrusel de 500 kg•m2 de momento de inercia y un radio de 2 m, que está parado. el niño salta sobre el carrusel y lo pone en movimiento. determina la velocidad angular del niño y del carrusel cuando se mueven juntos.

grupo de opciones de respuesta:

0.25 rad/s

5 rad/s

0.208 m/s

0.208 rad/s

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

In a system, when potential energy decreases, then entropy also decreases. true false