A limousine driver notices a stop sign while traveling 55 km/hr. What is the acceleration of the limousine if it comes to a complete stop in 4.3 s? Round to 1 decimal place if necessary.

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?