Physics Class 1

Question 1

Pico
Nano
Micro
Milli
Centi
Kilo
Mega
Giga

Answer 1

10^-12
10^-9
10^-6
10^-3
10^-2
10^3
10^6
10^9

Question 2

Units and dimensions

Speed
Density
Work

Answer 2

m/s L/T
kg/m^3 M/L^3
kg*m^3/s^2 ML^2/T^2

Question 3

Displacement

Answer 3

Distance(final) - Distance(initial)= net distance plus direction

Question 4

Average velocity

Answer 4

Displacement / time

Question 5

Velocity

Answer 5

Speed and direction

Question 6

Average acceleration

Answer 6

Change in velocity/ change in time

Question 7

The big 5

Answer 7

Question 8

Projectile Motion

Answer 8

Question 9

Newton’s First Law

Answer 9

An object’s state of motion will not change unless a net force acts on the object. The law of inertia.

Question 10

Newton’s Second Law

Answer 10

If Fnet is the net (total) force acting on an object of mass m, then the resulting acceleration of the object, a, satisfies this simple equation

   Fnet=ma

Question 11

Newton’s Third Law

Answer 11

If object one exerts a force on object 2 then object 2 exerts an equal but opposite force on object 1. These forces are equal in magnitude but act opposite in direction.

Question 12

Newton’s Law of Gravitation

Answer 12

F (grav) = G Mm/r^2

Question 13

Inverse Square Law

Answer 13

The magnitude of the gravitational force is inversely proportional to the square of the distance between the centers of the objects