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27 votes
27 votes
10. Which travels faster, a car that goes 200 miles in 2 hours, or a

truck that goes 300 miles in 2.5 hours?
11. Which travels faster, a snail that can go 20 cm in 3 minutes, or a
slug that can go 15 cm in 2 minutes?

User Davide Ungari
by
2.8k points

1 Answer

12 votes
12 votes

Answer:

Question 10. The truck travels faster.

Question 11. The slug travels faster.

Explanation:

Question 10.

1. Find the velocity of each vehicle.


Speed=(distance)/(time)


Speed_(Car) =(200(miles))/(2(hours))=100mi/h. \\\\ Speed_(Truck) =(300(miles))/(2.5(hours)) =120mi/h.\\ \\

2. Compare the velocities.


Speed_(Car) =100mi/h < Speed_(Truck) =120mi/h.

Hence, the trucks travels faster than the car.

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Question 11.

Apply the same method as in question 10.

1. Find the velocity of each body.


Speed_(snail)=(20(cm))/((3 min)) =6.67cm/min.\\ \\Speed_(slug)=(15(cm))/((2 min)) =7.5cm/min.

2. Compare the velocities.


Speed_(snail)=(20(cm))/((3 min)) =6.67cm/min < Speed_(slug)=(15(cm))/((2 min)) =7.5cm/min.

Hence, the slug travels faster.

User Thermech
by
2.2k points