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Question: can someone please help me with 18 and 19...

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Can someone please help me with 18 and 19
at the bottom of the hill? Answer in units of m/s 017 10.0 points A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 2.1 m/s. The acceleration of gravity is 9.81 m/s2 What is the initial height of the bob? Answer in units of m. m. 018 (part 1 of 2) 10.0 points he rope A 1.74x 10 kg car accelerates uniformly from t is the rest to 11.7 m/s in 3.57 s. he mass What is the work done on the car in this time interval? Answer in units of J 019 (part 2 of 2) 10.0 points What is the power delivered by the engine in this time interval? lever is Answer in units of W. 020 (part 1 of 2) 10.0 points A 19.2 kg block is dragged over a rough, hor- izontal surface by a constant force of 200 N acting at an angle of 28.9 above the horizon- tal. The block is displaced 66.8 m, and the coefficient of kinetic friction is 0.237. er. e of 75 N or e did. 19.2 kg
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