9.1 Speed and distance-time graphs

Question 1

what does the gradient of a line on a distance time graph represent

Answer 1

speed

Question 2

equation for constant speed

Answer 2

speed, V(m/s)=distance travelled,S(metres) / time taken, T(seconds)

Question 3

what is the scientific unit of speed

Answer 3

metres per second m/s

Question 4

Motorist in traffic queue took 50sec to travel a distance of 300m. what was the motorcycles average speed

Answer 4

6.0m/s (=300m/50s).

Question 5

what else can this equation be used to calculate give an e.g

Answer 5

average speed of an object whose speed varies

motorist in traffic queue took 50sec to travel a distance of 300m

Question 6

What are long distance vehicles fitted with?

Answer 6

recorders called tachographs these can check the drivers don’t drive to long

Question 7

If the line is horizontal on a graph what does it mean

Answer 7

the gradient is 0

Question 8

formula for speed of an object

Answer 8

v = s/t

Question 9

If on a graph a line is moving horizontally the object is…

Answer 9

stationary

Question 10

if on a graph a line is moving straight and upwards…

Answer 10

its moving at a constant speed

Question 11

what is the equation for speed

Answer 11

v= s/t