Physics formulas

Question 1

Formula of density

Answer 1

M/V, Where ‘M’ is mass and ‘V’ is volume.

Question 2

Formula for velocity

Answer 2

d/t, Where ‘d’ is displacement and ‘t’ is time.

Question 3

Formula for acceleration

Answer 3

Change in velocity/time.

Question 4

Formula for Force/Tension

Answer 4

m.a, where ‘m’ is mass and ‘a’ is acceleration.

Question 5

Formula for Work done/Energy/Torque

Answer 5

F.s, where ‘F’ is Force and ‘s’ is displacement.

Question 6

Formula for Power

Answer 6

W/t, where ‘W’ is Work done and ‘t’ is time.

Question 7

Formula for Pressure

Answer 7

Force/Area.

Question 8

Formula for Momentum (p)

Answer 8

m.v, where ‘m’ is mass and ‘v’ is velocity.

Question 9

Formula for Impulse

Answer 9

Ft, where ‘F’ is Force and ‘t’ is time.

Question 10

Formula for n1

Answer 10

n2[M1/M2][L1/L2][T1/T2]

Question 10

Formula for Angular velocity (w)

Answer 10

Q/t

Question 11

Formula for potential energy

Answer 11

mgh

Question 12

Formula for Average Speed (Diff. time)

Answer 12

2v1v2/v1+v2

Question 13

Formula for Average Velocity

Answer 13

x2-x1/t2-t1

Question 14

Formula for Average Speed (Same time)

Answer 14

v1+v2/2

Question 15

If y= u^v

Answer 15

dy/dx= vu^v-1*du/dx

Question 16

If y= uv

Answer 16

dy/dx= udv/dx + vdu/dx

Question 17

If y= u/v

Answer 17

dy/dx= [vdu/dx - udv/dx] / v^2

Question 18

Formula for Resultant |R|

Answer 18

√a2+b2+2abCosQ

Question 19

Formula for Direction of resultant

Answer 19

Tan phi= bsinQ/a+bCosQ

Question 19

Formula for cross product

Answer 19

absinQ n^

Question 20

Area of parallelogram

Answer 20

|a×b|

Question 21

Area of triangle

Answer 21

1/2 |a×b|

Question 22

Unit Vector

Answer 22

n^ = a×b/|a×b|

Question 23

Sine Angle

Answer 23

|a×b| / |a|×|b|

Question 24

Time of flight

Answer 24

t= 2usinQ/g

Question 25

Horizontal range

Answer 25

R= u²Sin2Q/g

Question 26

Height Max

Answer 26

u²Sin²Q/2g

Question 27

Time of projectile

Answer 27

t= √2h/g

Question 28

Range

Answer 28

u×√2h/g

Question 29

Velocity at the end

Answer 29

√u²+2gh

Question 30

Angular velocity

Answer 30

V= Wr

Question 31

W

Answer 31

2πf

Question 32

Angular Acceleration (Alpha)

Answer 32

a= Alpha× R

Question 33

Impulse (J)

Answer 33

J= m(v2-v1), P2-P1, ∆P

Question 34

Tension, at rest

Answer 34

N= mg

Question 35

Tension, when moving upward

Answer 35

N= m(a+g)

Question 36

Tension, when moving downward

Answer 36

N= m(g-a)

Question 37

Tension, freefall

Answer 37

0

Question 38

acc., when connected bodies

Answer 38

g(m1-m2)/(m1+m2)

Question 39

Tension, when connected bodies

Answer 39

2m1m2g/m1+m2

Question 40

Coefficient of friction(μ)

Answer 40

μ= f/N

Question 41

Work done

Answer 41

F.s

Question 42

Centre of mass for 1D

Answer 42

m1r1+m2r2/m1+m2

Question 43

Centre of mass for X

Answer 43

m1x1+m2x2+m3x3/m1+m2+m3

Question 44

Centre of mass for Y

Answer 44

m1y1+m2y2+m3y3/m1+m2+m3

Question 45

Torque

Answer 45

r×F

Question 46

Angular momentum

Answer 46

L= r×P

Question 47

Moment of inertia

Answer 47

I= mr²

Question 48

Universal law of gravitation

Answer 48

F= Gm1m2/r², G= 6.67×10-¹¹

Question 49

Gravitational acceleration(g)

Answer 49

g= GM/r²

Question 50

Escape velocity(Ve)

Answer 50

Ve= √2g(r+h)