Please show work for 1-5.

Multiple Choice Questions (1 point each) 3 mv's - 5 seconds later 7 m/'s 1. A 2 kg object accelerates as a net force acts on it. During the 5 seconds this force acts, the object changes its velocity from 3 m/s east to 7 m/s west. The work done on the object by the net force during this time period is most nearly . - 40 J b. 9 J c. 40 J d. 49 J Velocity (mu/'s) B D 10 20 Time (s) 2. The graph above shows the velocity of an object as a function of time. Rank the magnitude of the change in kinetic energy of the object for each segment from greatest to least. a. B>A>D>C b. C>B> A=D C. B>C>A>D d. A=D>B>C 5 171 3 m 3. A child with a weight of 20 N slides down a water slide. The water makes friction negligible. The height the slide is 3 m and the length of the slide is 5 m. The work done by the gravitational force during the slide down is a. 100 J b. 60 J c. 40 J d. 0 J