MATH SOLVE

2 months ago

Q:
# number 4 plewse asap plzzzzzzzz its due tomorrow i dont know how to do it

Accepted Solution

A:

Problem 4

A

If he is staying in the same place km for 1/2 hour, you can assume he's eating lunch or something. He hasn't moved at all, so his speed = distance over time = 0/(0.5) hours = 0

0 = answer

B

Watch out for this. It's a little bit nasty. He starts out at 20 km He ends up at 0 km. It means he is going back to were he started from. If it said velocity, you'd have a problem.Β

The time taken is 1.5 to 3 hours = 1.5 hours

His speed is d/t

His speed is 20/1.5 = 13.33 km/hr.

Speed = total distance / total time

total time = 3 hours.

Total distance = 40 km which is what the odometer would show.

Speed = 40 km/3 hours = 13.33 km/hour

C

You could just read the graph. He is 10 km from home.

A

If he is staying in the same place km for 1/2 hour, you can assume he's eating lunch or something. He hasn't moved at all, so his speed = distance over time = 0/(0.5) hours = 0

0 = answer

B

Watch out for this. It's a little bit nasty. He starts out at 20 km He ends up at 0 km. It means he is going back to were he started from. If it said velocity, you'd have a problem.Β

The time taken is 1.5 to 3 hours = 1.5 hours

His speed is d/t

His speed is 20/1.5 = 13.33 km/hr.

Speed = total distance / total time

total time = 3 hours.

Total distance = 40 km which is what the odometer would show.

Speed = 40 km/3 hours = 13.33 km/hour

C

You could just read the graph. He is 10 km from home.