A 200 kg roller coaster is initially moving at 4.0 m/s. The ride reaches a maximum height of 35 m and a top speed of 25

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A 200 kg roller coaster is initially moving at 4.0 m/s. The ridereaches a maximum height of 35 m and a top speed of 25 m/s.Finally, 40 seconds after starting, the roller coaster comes torest on a section of track that is 2 m below the starting height.There are no elastic (spring) forces involved.
For the whole ride, the work done by gravity on the rollercoaster is
For the whole ride, the work done by all non-conservativeforces combined on the roller coaster is
A pendulum is made by hanging a mass from a string. The mass isreleased from rest with the string at a 22° angle with respect tothe vertical. The magnitude of the mass’s acceleration as it passesthrough the lowest point of its motion is ____ m/s2.