Question
5. Convert the following speeds to km/hr (a) 60 mph (b) 43m/s (c) 66m/s (d) 84 mph
Answer
4.2
(150 Votes)
Xanthe
Master · Tutor for 5 years
Answer
(a) 60 mph is approximately equal to
km/hr.(b) 43 m/s is equal to
km/hr.(c) 66 m/s is equal to
km/hr.(d) 84 mph is approximately equal to
km/hr.
Explanation
## Step 1: Understanding the problemWe are asked to convert speeds from miles per hour (mph) and meters per second (m/s) to kilometers per hour (km/hr). ## Step 2: Converting mph to km/hrTo convert mph to km/hr, we need to know the conversion factor. We know that 1 mile is approximately equal to 1.60934 kilometers. Therefore, to convert mph to km/hr, we simply multiply the speed in mph by 1.60934.## Step 3: Converting m/s to km/hrTo convert m/s to km/hr, we also need a conversion factor. We know that 1 meter is 0.001 kilometers and 1 second is 1/3600 hours. Therefore, to convert m/s to km/hr, we multiply the speed in m/s by 3.6 (which is 0.001/1/3600).## Step 4: Applying the conversionsNow we can apply these conversions to the given speeds.(a) For 60 mph, we multiply 60 by 1.60934 to get the speed in km/hr.(b) For 43 m/s, we multiply 43 by 3.6 to get the speed in km/hr.(c) For 66 m/s, we multiply 66 by 3.6 to get the speed in km/hr.(d) For 84 mph, we multiply 84 by 1.60934 to get the speed in km/hr.