Which of the following situations violates the law of conservation of energy?
O A ball dropped from the top of a building increases in speed until it hits the ground
A block sliding freely on level ice increases in speed until it hits a wall,
O A child playing on a swing moves fastest at the bottom of the swing's path
The height a ball bounces decreases with each bounce

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.