The distance, expressed in inches, is
(1.2) x (the particle's average speed, in feet per minute) .
it's answer "c"
97 miles = 97 x 5280 = 512160 feet traversed in 3600 seconds. Hence 60 feet would be traversed in (3600/512160) x 60 = 60/512160 = 0.00011715 seconds
To find the average speed between time=0 and time=2, divide the distance traveled by the time (in this case 2 seconds).
The answer will depend on its acceleration.
The average speed is one fifth of the distance that she travels from the third to the eighth second.
it's answer "c"
97 miles = 97 x 5280 = 512160 feet traversed in 3600 seconds. Hence 60 feet would be traversed in (3600/512160) x 60 = 60/512160 = 0.00011715 seconds
i
2 seconds is the safe distance.
There is not enough information to answer this - it could be anything, depending on how the particle moves.
8 seconds
your line-of-sight is greater than 30 seconds ahead
To determine your following distance in seconds, choose a fixed point on the road ahead, such as a sign or a tree. When the vehicle in front of you passes that point, start counting the seconds until you reach the same point. Divide the distance in feet between your vehicle and the one in front by 15 to convert to seconds. Ideally, you should aim for a following distance of at least 3 to 4 seconds for safety.
To find the average speed between time=0 and time=2, divide the distance traveled by the time (in this case 2 seconds).
The average constant speed of the object between 2 and 5 seconds is the total distance covered divided by the time elapsed. If you have the distance covered during this time interval, divide it by 3 seconds (5s - 2s) to get the average constant speed.
From the observer's perspective, due to time dilation effects at high speeds, the pion would exist for approximately 0.000000041 seconds.
To determine the distance of lightning, count the number of seconds between seeing the lightning and hearing the thunder, then divide by 5 to get the distance in miles.