Achild throws a penny straight down into a wishing well. the penny's initial speed is 2 m/s. if the penny takes 3 seconds to hit the water, how deep is the well?

Adistance-time graph indicates than an object moves 100 m in 4 s and then remains at rest for 6 s. what is the average speed of the object?

4. a car with a mass of 2,200 kg can accelerate from 0 to 30 m/s in 6 seconds. a. assuming all of the force generated by the engine goes into acceleration of the car, how much force is the engine producing? show your work. (6 points)

Diego kicks a soccer ball from the end line. his fellow students time and mark the soccer ball as it moves down the field. the graph represents the ball's progress.