Question
Q5. The Mars rover, Curiosity , has a maximum speed of only 0.14km/h If Curiosity travels North for 60.0 s, what is its displacement?
Answer
4.7
(269 Votes)
Maisy
Veteran · Tutor for 10 years
Answer
2.3 m
Explanation
The problem involves using the speed of the Mars rover, Curiosity, and the time it travels in a specific direction to find its displacement. Displacement in physics is the straight-line distance and direction from the start point to the end point. It can be solved with the equation: displacement = speed x time. Since speed is distance covered in unit time, the displacement can also be calculated by multiplying the speed by the time.1. Convert the maximum speed from km/h to m/s. As we know, 1 km = 1000m, 1 hour = 3600 s. Therefore, speed in m/s = 0.14*1000/3600 = 0.0388889 m/s.2. Next, use time in the formula. The given time is 60 seconds. So, displacement = speed x time= 0.0388889 m/s x 60 s = 2.33333 m.Pay attention to the units used in the question: km/h for speed, and s for time. Also, we need use significant digits rule in physics, so the answer could be 2.3 m.