If acceleration is negative does that mean it is slowing down or different direction

if you shout into the grand canyon your voice travel at the speed of sound (340m/s) to the bottom of the canyon. how depp is the grand canyon at a spot where someone at the bottom can hear your voice 3.5 seconds after you shout

Describe how ultrasound and infrasound differ from normal sound, and give an example of each

Ultraviolet and infrared radiations are members of the electromagnetic spectrum what are the two properties that makes them different?

A sample of oxygen gas has a volume of 165 mL at a pressure of 0.854 atm. What will the volume of the gas be at a pressure of 2.3 atm if the temperature remains constant?

Which type of rock can most easily be split into thin sheets?

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are

How much force would be needed to move a car with the mass of 100kg to an acceleration of 5m/s/s?

A pendulum bob is made from a sphere filled with water. What would happen to the frequency of vibration of this pendulum if the sphere had a hole in it that allowed the water to leak out slowly?

Elias serves a volleyball at a velocity of 16 m/s. The mass of the volleyball is 0.27 kg. What is the height of the volleyball above the gym floor when its total mechanical energy is 41.70 J? Round to the nearest number.

Which of the following is the best description of a graph? A. Equations that can be plotted B. A representation of an equation C. Independent and dependent variables D. x and y lines