Question

Please HELP me answer these three questions!! (show work)

Answer 1

2) 42.6

3) 1500000 m

4) no he will not be late, it will take 3s

Step-by-step explanation:

#2:

Formula for average velocity:
⇒
`v=(d)/(t)`

Substitute

⇒
`(2560)/(60)`

⇒
`42.6`

#3:

1st convert 60km to m/s (correct si unit must always come first)

to convert kilometer to meter, multiply by 1000 (prefix 'kilo' = 1000)

60 km x 1000 = 60000 m

use the formula for speed, distance, & time

60000 = d/25

to find displacement just multiply the speed and time together

60000 x 25

1500000m is the displacement

#4:

s = d/t

given are displacement and speed/velocity

d = 25m

v = 8.5 m/s

to find the time just divide displacement by speed

8.5 = 25/t

25/8.5

≈ 3 seconds

so he will not be late for class.