Question

1. using graph A calculate the average speed of the object in motion from 12s to 20s. Explain your calculation.

2.compare graph A and B, which graph shows a greater velocity at 5s and 10s
describe how you know.

Answer 1

in s-t graphs,tanα=distance /time

200/8=28ms^-1

in graph A, in 5s-25ms^-1

in 10s-0 ms^-1

in graph B.,in 5s-4ms^-1

in 10s-20ms^-1

so in 5s A has greatest velocityin 10s B has greatest velocity