The mechanical advantage of an inclined plane is the ratio of the inclined surface to the vertical height. simple machines with greater mechanical advantage reduce the force required to lift a load. in which case is the effort required the least? a) raising a 100 kg box to a height of 1 m using an inclined plane of length 5 m b) raising a 100 kg box to a height of 2 m using an inclined plane of length 6 m eliminate c) raising a 200 kg box to a height of 1 m using an inclined plane of length 4 m d) raising a 200 kg box to a height of 2 m using an inclined plane of length 8 m

An alligator swims to the left with a constant velocity of 5 \,\dfrac{\text{m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction. when the alligator sees a bird straight ahead, the alligator speeds up with a constant acceleration of 3 \,\dfrac{\text {m}}{\text s^2}3 s 2 m ? 3, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction leftward until it reaches a final velocity of 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction leftward. how many seconds does it take the alligator to speed up from 5 \,\dfrac{\text {m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction to 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction?

World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

Why should seat belts not be mandatory quick plz