Question

Please help ...........

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Answer 1

Step-by-step explanation:

For 1-(a)velocity
`v=120\ km/h`

`d=180\ km`

time
`t=(d)/(v)=(180)/(120)=1.5\ hr`

1-(b)velocity
`=12\ mph`

time
`t=3\ hr`

distance
`d=vt=12* 3=36\ miles`

2(a)velocity
`v=32\ mph`

time
`t=1\ hr`

distance
`d=vt=32* 1=32\ miles`

2(b)velocity
`v=840\ km/h`

distance
`d=420\ km`

time
`t=(d)/(v)=(420)/(840)=0.5\ hr`

3(a)velocity
`v=14\ km/h`

distance
`d=35\ km`

time
`t=(35)/(14)=2.5\ hr`

3(b)velocity
`v=74\ mph`

time
`t=(5)/(2)\ hr`

distance
`d=vt=74* (5)/(2)=185\ miles`