7K Forces

Question 1

Force

Answer 1

A push or a pull.

Question 2

Contact Forces

Answer 2

The thing providing the force needs to touch an object to affect it.
Friction, air resistance, water resistance, upthrust

Question 3

Non-Contact Forces

Answer 3

Forces that can affect an object from a distance.
Gravity, static electricity, magnetism

Question 4

The units for measuring forces.

Answer 4

Newtons

Question 5

Weight

Answer 5

The force of gravity pulling on something- measured in Newtons (N)

Question 6

Mass

Answer 6

The amount of matter that makes up something- measured in kilograms (kg)

Question 7

Hooke’s Law

Answer 7

Extension is proportional to the force applied.

Question 8

Pascal (Pa)

Answer 8

The units for measuring pressure.
1Pa = 1N/m3

Question 9

Balanced Forces

Answer 9

Two forces of the same size acting upon an object in opposite directions. Balanced forces will not change the speed of a moving object

Question 10

Unbalanced forces

Answer 10

When one of the forces acting upon an object is larger than the other. If acting on a moving object unbalanced forces will change its speed.