Help me do these problems step by step

PROBLEM 1: (Integration 2) A person throws a ball straight upward into the air. The ball starts 1m above the ground, and moves upward at a speed of 20 % The function O R models the velocity of the ball at seconds into its flight. a. Use a (right hand) Riemann sum with 6 equal subintervals to approximate the value of 3 (- 9.8t + 20)dt . 0 b. (i) Interpret the meaning of the definite integral in the context described above. Please include units. (i1) Use your answers to parts (a) and (b (i)) to approximate how high the ball is off the ground after 3 seconds. (Keep in mind that the ball starts 1 meter off the ground.) PROBLEM 2: (Integration 2) Momiji the dog sees her best friend standing 10 meters away. She runs in a straight line as fast as she can to say hi to her friend. The function O . . m models her velocity in -. a. Use a (right hand) Riemann sum with time intervals (At) of length 1 second to BT (B 8 [IGREILE 0ff5te1_t dt . 0 (1) Interpret the meaning of the definite integral in the context described above. Please include units. (i1) Use your answers to parts (a) and (b(i)) to answer this question: In 8 seconds, does Momiji make it to see her friend