Two rail cars with masses of mA = 15 Mg and          mB = 12 Mg and velocities VA=1.5 m/s, VB=0.75 m/s are colliding head-to-head as shown. After the collision they move together.(The coupling takes place in 0.8 s.) What is the average impulsive force between the cars?

If a spring force is given by F = 5s3  N/m and the spring is compressed by s = 0.5 m, the work done on a particle attached to the spring will be

A man hits the 50-g golf ball such that it leaves the tee at an angle of 40° with the horizontal and strikes the ground at the same elevation a distance of 20 m away. Determine the impulse of the club C on the ball. Neglect the Impulse caused by the ball’s weight while the club is striking the ball.

The girl and bicycle weigh 125 lbs. She moves from point A to B. The velocity at A is 10 ft/s and she stops pedaling at A. (ρ= 50 ft) What is the magnitude of the normal force NB, at point B?

Solve the equation x2 + 4x + 1 = 0 by completing the square. You must show your work. (Use notation like x^2 for x2 and sqrt(x) for as needed.)

To promote healthy nutrition in America, consumers should be encouraged to choose food items that nutrient dense instead and combine these foods for a quick and healthy meal. Which of the behaviors does not coincide with a healthy eating behavior?

Solve by substitution or elimination: 2x + y = 10-3x + 2y = -1 You must show your work. 

Briefly address (3-4 sentences) the following prompt: Explain the two different senses of “informed consent?”  Give an example of how these senses can “come apart.”  

Write a brief characterization (2-3 sentences) for the following concept: Rule Utilitarianism

Infant mortality is one of the key indicators of the overall health of a nation.