An iron bar is used to lift a slab of cement. the force applied to lift the slab is 4.0 × 10^2 n. if the slab weighs 6400 n, what is the mechanical advantage of the bar?

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Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.