2. A rollercoaster car, 300 kg with passengers, accelerates
down a 65° hill. We will assume that friction is small enough
that it can be ignored.
A. Draw a force diagram for the system of car and riders.
B. What is the acceleration of the rollercoaster down the hill?
C. If they are traveling 4 m/s at the time shown in the picture, how fast will they be traveling at the
end of the straight stretch, 20 m later?

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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