A 6,600 kg train car moving at + 2.0 m/s bumps into and locks together with one of mass 5,400 kg moving at - 3.0 m/s.

What is their final velocity?

A.) - 1.0 m/s

B.) + 2.5 m/s

C.) - 0.25 m/s

D.) + 0.50 m/s

Which of the following best describes gravity? A Gravity can be an attractive or a repellant force. O B. Gravity is neither an attractive nor a repellant force O C. Gravity is always an attractive force. O D. Gravity is always a repellant force

Choose all of the examples of balanced forces. A chandelier has been hanging in the kitchen for years A log floats on top of the lake You place your book on the top of a flat table Your wagon rolls down the hill The wind blows and turns the turbines

If the magnitude of the resultant force acting on the bracket is to be 440 n directed along the positive u axis, determine the magnitude of f

Total internal reflection occurs when the angle of incidence A. Is less than the official Angle. Is zero C. Equals the angle of reflection D. Exceeds the critical angle

If a train travels 800 mph in 5 hours it's rate of speed is ...

What's the difference between solids and liquids?

According to the Theory of Continental Drift, what did the Earth's continents look like 255 million years ago?

What is the emf of a battery that increases the electric potential energy of 0.060 CC of charge by 0.70 JJ as it moves it from the negative to the positive terminal?

Why is gravitational potential energy negative?

What will happen to this current if a magnet is brought near the cord?