Una persona, en trayectoria rectilínea, camina 1 min a 1,26 m/s y después corre durante 1 min a 3,05 m/s. calcule la rapidez media de todo el recorrido.

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2