An 8.0-kg object moving 4.0 m/s in the positive x direction has a one-dimensional collision with a 2.0-kg object moving 3.0 m/s in the opposite direction. The final velocity of the 8.0-kg object is 2.0 m/s in the positive x direction. What is the total kinetic energy of the two-mass system after the collision?

A. 32 J
B. 52 J
C. 41 J
D. 25 J
E. 29 J


Answer: C

Physics & Space Science

You might also like to view...

In science, an unexpected change in a series of measurements is referred to as

A) a deviation B) bias C) an error D) an uncertainty

Physics & Space Science

A point source of light is positioned 20.0 m below the surface of a lake. What is the diameter of the largest circle on the surface of the water through which light can emerge?

What will be an ideal response?

Physics & Space Science

A sinusoidal electromagnetic wave is propagating in vacuum. At a given point P and at a particular time, the electric field is in the +x direction and the magnetic field is in the -y direction

(a) What is the direction of propagation of the wave? (b) If the intensity of the wave at point P is 0.36 W/m2, what is the electric field amplitude at that point? (c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T • m/A, ?0 = 8.85 × 10-12 C2/N • m2)

Physics & Space Science

Which statement best describes white light after it passes through a prism?

A. The white light is a combination of all wavelengths of the visible spectrum. B. The white light is a combination of the wavelengths of red and blue. C. The white light has no electromagnetic energy. D. The white light contains ultraviolet energy.

Physics & Space Science