consider a bouncy ball dropped from a height h. The ball bounces off the floor a
ID: 3280558 • Letter: C
Question
consider a bouncy ball dropped from a height h. The ball bounces off the floor and returns to it original height. Which of the following statements is INCORRECT? (NOTE To be correct, the statement must be true at every moment from when it is released at height h to when it return to height h. a. The collision between the ball and the floor was elastic b. The acceleration of the ball is constant. c. Potential Energy at h s Kinetic Energy just before hitting the ground. "Pressure applied to an enclosed flud is transmitted undiminished to all parts of the fluid and to the walls of the container." This principle is known as: a. Bernoulli's Principle b. Archimedes Principle c. Pascal's Principle d Law of Fluid Pressure 4. 5. If an object floats on top of a body of water, which of the following is true? a. The density of the object is greater than the density of the water b. The density of the water is greater than the density of the object c. The density of the object is equal to the density of the water d. You cannot determine which has a greater density with the given information alone T ANSWERExplanation / Answer
3.
answer is c)potential energy at h =kinetic energy just before it hits the ground
since by conservation of mechanical energy ,the potential energy at h is converted into kinetic energy at the time the ball hits the floor with the same speed it leaves the ground.
4.
answer is c)pascal's principle
Pascal's principle is defined as pressure applied to every fluid is transmitted undiminished to every part of the fluid and walls of the container vessel
5.
answer is B)The density of water is greater than density of the object.
according to Buoyancy principle ,if the density of object in fluid is greater than the density of water then object will sink ,if density of object is less than density of water then the object will float on the water.
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