Physics 1: Kinematics and Mechanics

Question 1

How do you solve a centripetal force problem?

Answer 1

Question 2

In uniform circular motion, the acceleration of the object always points where?

Answer 2

toward the center of the circular path

Question 3

the lever arm is

Answer 3

the shortest distance from the pivot to line of force

Question 4

what formula for Torque do you use when you can find the lever arm quickly

Answer 4

τ = l F

(length of lever arm x Force)

Question 5

How do you solve for total displacement?

e.g. you went north 3 miles, west 6 miles and north 5 miles

Answer 5

draw a line from start to finish and make a right trangle with it

Question 6

How do you convert to a quantity that is cubed?

Answer 6

Question 7

work equation

Answer 7

work is Fd (force x dist)

fdcos theta

and Work in = Work out

Question 8

Work-energy theorem

Answer 8

W_net = ΔKE = KE_f - KE_i

Question 9

Equation for work

Answer 9

W = FdcosØ

Question 10

Power (P) =

Answer 10

P = W/t

^{where W= work = change in kinetic energy. So, it’s P=E/t}

Also, P = Fv

Question 12

in space, relationship between frequency and wavelength

Answer 12

inverse

Question 13

relationship between object length and wavelength of the light absorbed

Answer 13

direct

Question 14

relationship between object length and frequency of vibration

Answer 14

Direct

Question 15

in glass, relationship between frequency and wavelength

Answer 15

inverse

Question 16

relationship between frequency and energy

Answer 16

direct

Question 17

relationship between wavelength and energy

Answer 17

inverse

Question 18

relationship between speed of light and energy

Answer 18

none

Question 19

relationship between length and pendulum frequency -

Answer 19

inverse

Question 20

relationship between pendulum period to mass and amplitude

Answer 20

with mass - none

with amplitude - direct

Question 21

relationship between mass and frequency of mass hung from a spring

Answer 21

inverse

Question 22

relationship between frequency and wave speed

Answer 22

inverse

Question 23

relationship between wave speed and density

Answer 23

inverse

Question 24

relationship between wave speed and elasticity

Answer 24

direct

Question 25

relationship between object length and wave length -

Answer 25

direct

Question 26

relationship between object length and frequency -

Answer 26

inverse

Question 27

relationship between wavelength and frequency

Answer 27

inverse

Question 28

relationship between wave speed and frequency

Answer 28

direct

Question 29

relationship between sound wave travel speed and density of liquid

Answer 29

inverse