Question

John drives from his house at 55 miles per hour. After 8 hours, he ends up at a displacement from his house of:

a) -440 miles
b) 440 miles
c) We cannot know the answer since we do not know the direction traveled
d) 55/8 miles

Answer 1

John's displacement after driving at 55 miles per hour for 8 hours is 440 miles, assuming he has not changed direction.

Step-by-step explanation:

When John drives from his house at 55 miles per hour and continues for 8 hours, we can find his displacement by multiplying his speed by the time. Displacement is the straight-line distance from the starting point to the end point in a specified direction. However, since the question does not mention John changing direction, we assume he moves in a straight line, and thus his displacement would be the same as the distance traveled.

The formula to find displacement (or distance if direction is constant) is:

Displacement = Speed × Time

Therefore:

Displacement = 55 mph × 8 hours = 440 miles

The correct answer is b) 440 miles.