Suppose a train engine is pulling ten cars. The last car becomes separated from the train. What happens to the motion of the rest of the train and why?

mike's car can accelrate from 0 mph to 40 mph in 5 sec. what is the acceleration of his car miles per hour per sec?

Plants make their own carbohydrates, proteins, and fats. Where do they get the energy needed to make these substances? a carbon dioxide b the Sun c plant food d soil and water

Which factor does notaffect the resistance of a material? temperature thickness weight length

A copper rod at 25°C is 2.5 m long. How long would it take a sound to move through the rod from one end to another? how would I do this?

When a postitive charge is placed in a electric field the field will

During a medical condition screening lung capacity testing is a standard procedure. True of false

Which of the following is a unit of energy found in food? a). vitamin b) calorie c) nutrient d) water

As one goes from left to right in a period, which of the following is true? A. The number of protons decreases. B. The number of valence electrons increases. C. both A and B D. none of the above

Which of the following surfaces reflects the most light A yellow cloth B. tree trunk C aluminum foil D. Concrete sidewalk

Which part of an atom has a mass approximately equal to 1/2000 of the mass of a common hydrogen atom? A. nucleus B. electron C. proton D. electron cloud