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Block A on the left has mass 1.00 kg. Block B on the right has mass 3.00 kg. Block A is initially moving to the right at 6.00 m/s, while block B is initially at rest. The surface they move on is level and frictionless. What is the velocity of the center of mass of the two blocks after the blocks collide? A. 6.00 m/s, to the right B. 3.00 m/s, to the right C. 1.50 m/s, to the right D. zero

By law, all apartment buildings in New Jersey must have smoke alarms in the ceilings. If Mary suffers smoke inhalation because the smoke alarm in her apartment building was not yet installed and Mary sues the owner for negligence, Mary would have to prove:

If a work is written and published today by a natural person under that person’s real name, how long will copyright protection last under current federal copyright law?

While driving his car five miles over the speed limit, Carl struck Darla, who was jaywalking across the street. When the case came to trial, the jury determined that Carl was 60% negligent and that Darla was 40% negligent. Darla’s injuries are $10,000. This accident occurred in a state following the comparative negligence theory of recovery.

Two objects with different masses collide with and stick to each other. Compared to before the collision, the system of two objects after the collision has: A. the same amount of total momentum and the same total   kinetic energy. B. the same amount of total momentum but less total kinetic   energy. C. less total momentum but the same amount of total kinetic   energy. D. less total momentum and less total kinetic energy.

The life course pattern view the live course as a trajectory path. Why is this? Please complete a short essay response to this question. 

A cart (weight w1) is attached by a lightweight cable to a bucket (weight w2) as shown. The ramp is frictionless. When released, the cart accelerates up the ramp. Which of the following is a correct free-body diagram for the cart?  

Two blocks are connected as shown. When released, the 6.00-kg block accelerates downward and the 8.00-kg block accelerates to the right. After each block has moved 2.00 cm, the force of gravity has done: A. work on both blocks, but more work on the 8.00-kg   block than on the 6.00-kg block. B. the same amount of work on both blocks. C. work on both blocks, but less work on the 8.00-kg block   than on the 6.00-kg block. D. work on the 6.00-kg block only.

An object is initially at rest. A net force (which always points in the same direction) is applied to the object so that the power of the net force is constant. As the object gains speed: A. the magnitude of the net force remains constant. B. the magnitude of the net force increases. C. the magnitude of the net force decreases. D. the magnitude of the net force first increases, then   remains the same.

Multiple Choice Questions