Forces and Motion

Question 1

displacement

Answer 1

a measure of how far the finishing point is from the starting point. It also has direction e.g. 3.9 km, 101°

Question 2

vector quantities

Answer 2

have both magnitude (size) and direction (e.g. up, 214°, east, right, etc)

examples include: force, displacement, velocity, acceleration

Question 3

scalar quantities

Answer 3

have magnitude but no sense of direction

examples include: distance, mass, temperature, time, speed

Question 4

average speed formula

Answer 4

speed(m/s)=distance(m)/time(s)

v=s/t

Question 5

typical speeds:
walking?
running?
cycling?

Answer 5

walking: 1.5 m/s
running: 3 m/s
cycling: 6 m/s

Question 6

what is acceleration?

Answer 6

rate of change in velocity

Question 7

acceleration formula:

Answer 7

acceleration(m/s^2)=change in velocity(m/s)/time taken(s)

a=v-u/t

Question 8

how to find the area under a curve

Answer 8

1. count whole squares
2. count partially filled squares
3. all partial boxes count as half boxes
4. sum number of boxes*distance per box