Forces and Shape

Question 1

Force is ___

Answer 1

A vector quantity applied to all objects, and it is measured in Newtons (N).

Question 2

Define Force

Answer 2

Push and pull forces that change the speed, direction or shape of the object.

Question 3

The 7 types of Forces

Answer 3

Reaction
Weight (gravitational)
Upthrust
Friction
Drag
Magnetic
Electrostatic

Question 4

The object will not change if the forces ___

Answer 4

Are balanced or no force is acting on the object.

Question 5

Force that opposes motion in a gas or liquid

Answer 5

Friction

Question 6

Use of Friction

Answer 6

It is essential in some situations but otherwise wastes energy and causes wear.

Question 7

Force on springs and wires

Answer 7

Change length when a force acts on them and return to their original length afterwards.

Question 8

Hooke’s Law

Answer 8

The extension of a spring is proportional to the force applied.

Question 9

Elastic Limit

Answer 9

When a spring is stretched too much and does not continue to follow Hooke’s Law. Once reached, the shape changes permanently.

Question 10

Rubber bands

Answer 10

Do not obey Hooke’s law. The extension is not directly proportional to the load.