You do 185 j of work pulling a cart up a ramp. if the ramp does 153 j of work, what is the efficiency of the ramp? 82.7 percent 121.0 percent 32.0 percent 338.0 percent

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

What’s #16 asking and how do i solve it?