. Un joven sale de su casa y recorre 100 m para llegar a su tienda, regresa a su casa y ha demorado 10 segundos de la tienda su casa. ¿Según lo anterior cuánto cual fue la velocidad con la que hizo el movimiento a la tienda? 100 m/sg 20 m/seg 10 m/seg 1 m/seg

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

How is the ideal mechanical advantage of a wheel and axle calculated?

Estimate the kinetic energy of mars with respect to the sun as the sum of two terms, that due to its daily rotation about its axis, and that due to its yearly revolution about the sun. (assume mars is a uniform sphere with mass = 6.4×10 to the power of 23 kg, radius = 3.4×10 to the power of 6 m, rotation period = 24.7 hours, orbital period = 686 days and is 2.3×10 to the power of 8 km from the sun.)