Which of the following are true about the acceleration of objects? Check all that apply.
1. Acceleration can occur when an object moves in reverse
2. Acceleration is equal to distance divided by time
3. Acceleration can occur when an object travels in a straight line at constant speed
4. Acceleration can occur when an object changes its speed

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

Steelhead trout migrate up stream to spawn.occasionally they need to leap up small waterfalls to continue their journey. fortunately, steelhead are remarkable jumpers, capable of leaving the water at a speed of 8.0 m/s. a. what is the maximum height a steelhead trout can jump? b.leaving the water at 8.0 m/s, the trout lands on top of the water fall 1.8 m high. how long was it in the air?