Chapter 3 - Kinematics

Question 1

Displacement - does it matter which path an object takes?

Answer 1

Does not matter!

d = position (f) - position (i)

Question 2

Average velocity will always have the same sign as what?

Answer 2

Displacement

Question 3

Can an object be accelerating if speed is constant?

Answer 3

Yes

Question 4

Slope of a position v. time graph gives…

Answer 4

Velocity

Question 5

Slope of a velocity v. time graph gives…

Answer 5

Acceleration

Question 6

The area under a velocity v. time graph gives

Answer 6

Displacement

Question 7

Free fall acceleration - dependent on mass?

Answer 7

No. In absence of air resistance, both objects will hit ground at same time

Question 8

For a projectile in a parabolic arch at the top, what is the vertical and horizontal velocity?

Answer 8

Vertical velocity = 0

Horizontal velocity still there!

Question 9

For a projectile in a parabolic arch: total flight time =

Answer 9

Twice the time required to reach the top

Question 10

All of the following are vectors EXCEPT:

Displacement, Acceleration, Velocity, Speed

Answer 10

Speed

Question 11

pico

nano

micro

milli

centi

Answer 11

10^-12

10^-9

10^-6

10^-3

10^-2

Question 12

kilo

mega

giga

Answer 12

10^3

10^6

10^9

Question 13

Avg. Velocity =

Answer 13

Displacement / time

Question 14

Avg. Acceleration =

Answer 14

Change in velocity / time

Question 15

Units of speed

Answer 15

m/s

Question 16

units of density

Answer 16

kg/m^3

Question 17

units of work

Answer 17

kg(m^2) / s^2