Elastic force ck-12

The counter force exerted by an elastic material as it changes shape is known as (a)   force.

(a)   is the ability of a material to return to its original

Which of the following does not describe an object with high elasticity?

• A slinky that expands and contracts when held at one end.

• A spring that easily compresses when pushed.

• A rubber band that stretches when you pull it.

• A piece of paper that rips after pulling on it.

The ability of matter to return to its original shape after being stretched or compressed is called (a)   .

Which of the following would increase the elastic force acting on that object?

• Moving a spring to an unstretched position.

• Compressing a spring twice as much as its starting position.

• Stretching a bungee cord 1.5x as much.

• Increasing the weight being vertically supported by a string.

Play objects with elasticity include

• spring toys

• silly putty

• modeling clay

• all of the above

When an elastic material is stretched or compressed, it exerts (a)   force.

The less an elastic material is stretched or compressed, the greater the force it exerts.

• true

• false

An elastic material offers no resistance to forces that change its shape.

• true

• false

When an archer lets go of a bow's string, an arrow shoots in the opposite direction due to the elastic force of the released string and bow.

• true

• false