Question

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?

Answer 1

Answer:

Question 10. The truck travels faster.

Question 11. The slug travels faster.

Step-by-step explanation:

Question 10.

1. Find the velocity of each vehicle.

$Speed=\frac{distance}{time}$

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

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.

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

2. Compare the velocities.

$Speed_{snail}=\frac{20(cm)}{(3 min)} =6.67cm/min < Speed_{slug}=\frac{15(cm)}{(2 min)} =7.5cm/min.$

Hence, the slug travels faster.