Physics 221 Week 2

SI Units

100

mass

kg

200

time

s

300

length

m

400

velocity

m/s

500

acceleration

m/s²

Unit Conversions

100

1 g

10^-3 kg

200

1 cm²

10^-4 m²

300

1 km

10³ m

400

5 min

300 s

500

g/cm³

10³ kg/m³

Motion

100

Describe the motion:

--------> v

--------> a

speeding up, moving right

200

Describe the motion:

-------> v

<------- a

slowing down, moving right

300

Describe the motion:

<------- v

<------- a

Speeding up, moving left

400

Describe the motion:

<------- v

-------> a 

Slowing down, moving left

500

Describe the motion:

-------> v

a=0

constant velocity, moving right

Kinematic Equations

100

Given v_i, v_f, and a. What kinematic equation would you use to find Delta x?

#3

200

Given x_i, x_f, v_i, and t. What kinematic equation would you use to find a?

#2

300

Given Delta x, t, and  v_f. What kinematic equation would you use to find v_i?

#4

400

Given v_i, v_f, and a. What kinematic equation would you use to find t?

#1

500

Given a(t)=4t, v_i, and t. What kinematic equation would you use to find Delta x?

DON'T use a kinematic equation (a is not constant)

Calculus

100

Given x(t)=6t²+3t+5, what function represents the velocity?

v(t)=12t+3

200

Given v(t)=3t-4, what is the acceleration?

a(t)=3

300

Given x(t)=5t²+4t, what function represents acceleration?

a(t)=10

400

Given v(t)=2t+4 and x(0)=0, express position as a function of time.

x(t)=t²+4t

500

Given a(t)=4t, v(0)=3, and x(0)=-7, what is x(t)?

x(t)=(2/3)t³+3t-7