When an object is moving at negative acceleration, does that mean it is moving backwards?

What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s

You are asked to design a horizontal curve with a 40-degree central angle (' = 40) for a two-lane road with 11-ft lanes. the design speed is 70 mi/h and superelevation is limited to 0.06 f a. True b. Falset.

I have three questions. John has to hit a bottle with a ball to win a prize. He throws a 0.4 kg ball with a velocity of 18 m/s. It hits a 0.2 kg bottle, and the bottle flies forward at 25 m/s.

How often the particles vibrate about their fix position" O Amplitude O Frequency O Period Speed 0 Wavelenght

How much heat is needed to raise the temperature of 6g of water by 20°C?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

A tow truck pulls a 500 kg car so that the car accelerates 2 m/s2. What is the net force on the car? 250 N 498 N 1000 N 502 N

Which force keeps you near earths surface?

Name one process that requires a force in the human body.

Which describes the electric forces inside an atom