Chapter 2.1

Question 1

Displacement

Answer 1

Change in position

Question 2

Distance

Answer 2

Length of path followed

Question 3

Acceleration

Answer 3

Rate of change of velocity

Question 4

Equation for velocity in uniformly accelerated motion

Answer 4

v = u + at

Question 5

The slope of the tangent to the graph of position versus time

Answer 5

Velocity

Question 6

Average speed

Answer 6

Total distance traveled divided by total time taken

Question 7

Average velocity

Answer 7

Displacement divided by total time taken

Question 8

The area under the curve in a velocity time graph

Answer 8

Change in position

Question 9

Two formulas for position in uniformly accelerate motion

Answer 9

s = si + (u + v)t/2
s = si + ut + 0.5at^2

Question 10

Mechanics formula for when time isn’t given

Answer 10

v^2 = u^2 + 2a(s - si)

Question 11

X component of position vector in projectile motion

Answer 11

utcos(theta)

Question 12

y component of position vector in projectile motion

Answer 12

utsin(theta) - 0.5gt^2

Question 13

Projectile motion formula for when t isn’t given

Answer 13

v^2 = u^2 - 2gy

Question 14

Fluid resistance force at low speed and high speed

Answer 14

F = kv
F = kv^2

Question 15

With air resistance, the maximum height and shape of particle movement is

Answer 15

smaller and not symmetrical