can you tell a simple school project to prove Newton's 2nd law of motion?

Question

it can even be a working model

Answer 1

Soda Pop Can Hero Engine

DESCRIPTION: Water streaming through holes in the bottom of a suspended soda pop can causes the can to rotate.

MATERIALS AND TOOLS:
Empty soda pop can with the opener lever intact
Nail or ice pick
Fishing line
Bucket or tub of water

PROCEDURE:
Lay the pop can on its side and using the nail or ice pick carefully punch four equally spaced small holes just above and around the bottom rim. Then before removing the punching tool for each hole, push the tool to the right (parallel to the rim) so that the hole is slanted in that direction.


Bend the can's opener lever straight up and tie a short length of fishing line to it.


Immerse the can in water until it is filled. Pull the can out by the fishing line. Water streams will start the can spinning.


If the can does not spin try making the holes larger or adding a fishing swivel to the string above the can.


DISCUSSION: The Soda Pop Can Hero Engine is an excellent demonstration of Newton's Laws of Motion. The can rotates because a force is exerted by the flowing water (1 st. Law). The rate of rotation will vary with different numbers of holes and different diameters of holes in the can (2nd. Law). Try two holes and try a can with large holes verses a can with small holes. The can rotates in the opposite direction from the direction of the water streams (3rd. Law).

Answer 2

Get a few of the same spring and place a marble in front of each. Push the marbles with the spring back different amounts. Let them go, showing that the marbles go different distances. The marble pushed back the furthest will go the farthest when let go, because although it was the same mass as the other marbles, it was accelerated more by the greater force of the spring.

You will, of course, need to understand what the second law is about in order to explain to others how this actually proves the law.

Answer 3

Weigh a known mass. The weight will be given by F=ma where m is the mass and a is the acceleration due to gravity.

If you can slide a mass over a relatively frictionless surface, you can show that the mass will accelerate as long as a force is applied. Otherwise, velocity will remain constant.

The examples are myriad.

Answer 4

jump from a buiding!!@!!@!!!!!