Which slideshow designs cannot be used?

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

What is a possible result of higher air temperature caused by global warming