Two boxes m_1 and m_2 are connected by a lightweight cord and sitting on a frictionless surface. A horizontal force of 66 N pulls on box m_1 and then m_2 is pulled along.

If the acceleration of the boxes is 2.2 m/s^2 and the mass of m_1 is 12 kg. Find the mass of m_2.

a. 12 kg

b. 18 kg

c. 30 kg

d. 48 kg

e. 42 kg

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Which of the following is an example of motion in two dimensions?

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above