Stick Man exerts 125 Newtons of force to push the refrigerator up the ramp into the truck. The refrigerator has a weight of 1000 Newtons.

What is the mechanical advantage of the ramp?

please alert your teacher that this picture is missing

Group of answer choices

8

1125 N

875 N

0.125

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?