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Physics > Formulas > Flashcards

Formulas Flashcards

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1
Q

What is the formula that links distance, speed and time?

A

d=st

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2
Q

What is the formula that links acceleration, change in velocity and time?

A

a=(v-u)/t

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3
Q

Calculate distance if final velocity is 4m/s, initial velocity is 1.5m/s and acceleration is 5m/s^2?

A

1.375m

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4
Q

What is the formula that links Force, mass and acceleration?

A

F=ma

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5
Q

Calculate mass if weight is 100N and g is 20N/kg.

A

5kg

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6
Q

Wat is the formula that links mass, velocity and momentum?

A

p=mv

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7
Q

How can you calculate change in momentum?

A

Change in momentum= Ft

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8
Q

A car has a mass of 2500kg is travelling at 30m/s makes an emergency stop with a braking force of 3500N. What is the breaking distance?

A

321.428571m

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9
Q

What is the formula for Kinetic Energy?

A

KE=0.5mv^2

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10
Q

What is the formula for GPE?

A

GPE=mgh

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11
Q

How do you calculate efficiency?

A

efficiency= useful energy/total energy

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12
Q

Calculate wave speed If it travels 4m in 0.5secs.

A

8m/s

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13
Q

What is the wave equation?

A

v=fλ

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14
Q

What is the formula that links work done, force and distance?

A

E=Fd

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15
Q

Calculate Power if Force is 500N, distance is 450m and it takes 2secs.

A

1125W

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16
Q

How do you calculate the moment of a force?

A

moment=force x distance

17
Q

What is the formula that links charge, current and time?

A

Q=It

18
Q

What is the formula that links charge, energy and potential difference?

A

E=QV

19
Q

Calculate resistance if P.d is 9V and current is 0.5A.

A

18ohm

20
Q

What is the formula that links time, P.d, Current and Energy?

A

E=IVt

21
Q

What is the formula that links Power, Energy and time?

A

P=E/t

22
Q

What is the formula that links Power, P.d and Current?

A

P=IV

23
Q

Calculate current if resistance is 5omhs and Power is 6000W.

A

34.64A

24
Q

What is the formula that links length of a wire, Magnetic flux density, current and force ?

A

F=BIl

25
Q

The p.d across the first coil of a transformer is 500V and the current is 5A. The current across the second coil is 10A. Calculate the p.dthrough the second coil.

A

2500V

26
Q

What is the formula that links the number of coils of wire and the p.d?

A

Vp/Vs=Np/Ns

27
Q

How do you calculate density?

A

p=m/V

28
Q

How do you calculate specific heat capacity?

A

c=Q/mθ

29
Q

Calculate specific Latent Heat if 3kg of a substance with a SHC of 2500J/KgC is heated by 7 Celsius?

A

17500J/kg

30
Q

What is the formula that links Force, extension and the spring constant?

A

F=kx

31
Q

What is the formula to work out the energy transferred in stretching?

A

E=0.5kx^2

32
Q

What is the formula linking Pressure, force and area?

A

P=F/A

33
Q

Calculate the density of a liquid on earth if the pressure is 550Pa and the height of the column is 500cm.

A

11.2244898Kg/m^3

Physics (10 decks)

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