Physics

Question 1

Calculating the speed of moving objects?

Answer 1

Speed is distance divided by time

              D. 
           S.    T.

Question 2

Basic knowledge of the distance, and time graphs?

Answer 2

A positive gradient is the increasing speed, a flat line means it stopped and a negative gradient is the speed slowing down

Question 3

Types of simple machines?

Answer 3

Wheel and axle, screw, lever, pulley, wedge and inclined plane

Question 4

How do you workout a moment?

Answer 4

A moment is the distance from the pivot and force on the lever multiplied together

Question 5

Hooke’s law?

Answer 5

Hooke’s Law states an elastic object must return to its original shape and size after removing the force from the load

Question 6

Deformation?

Answer 6

When something is overstretched and cannot go back to its original form

Question 7

Pressure in solids?

Answer 7

The pressure a solid object exerts on another solid surface is its weight in newtons divided by its area in square metres

Question 8

Pressure in liquids?

Answer 8

P= pgh
P = fluid pressure
p= fluid density
g = acceleration due to gravity
h = fluid depth

Question 9

Pressure in gases?

Answer 9

The force exerted by gaseous molecules as they collide with the walls of their container