If the required time is measured from 0 then s = t2 - 8t, therefore 9 = t2 - 8t, which can be written as t2 - 8t - 9 = 0
This equation can be factored as (t - 9)(t + 1) = 0
As we are only concerned with a positive time then the answer is when t - 9 = 0, thus t = 9 seconds.
To calculate the distance to a lightning strike, count the number of seconds between seeing the lightning and hearing the thunder. Divide this number by 5 to get the distance in miles, or by 3 to get the distance in kilometers.
The straight line distance would be 350 kilometers (3.5 x 100 km). Multiply the measured distance by the scale.
1 Kilosecond equals 1,000 seconds, and 1 Megasecond equals 1,000,000 seconds, so 250 seconds is equal to .250 Kiloseconds, and .0000250 Megaseconds.
To find the speed in feet per second, divide the distance by the time. So, 400 feet divided by 52.4 seconds equals approximately 7.63 feet per second.
To find meters per second, divide the distance by the time. In this case, 10 meters divided by 1.39 seconds equals approximately 7.19 meters per second.
The distance traveled by the boat can be calculated using the formula Distance = Velocity x Time. Plugging in the values, the distance would be 1.55 m/s x 246 seconds, which equals 380.7 meters.
Jack's speed from t=5 seconds to t=10 seconds is the average speed over that time interval. You can calculate this by finding the total distance traveled during that time period and dividing it by the time taken.
Distance equals speed multiplied by time. For example, speed is 72 km/h and time is 200 seconds or 200/3600=0,0(5) hours, so the distance traveled is 72*0,0(5)=4 kilometers.
S=d/t It's an Equation to show how to calculate the speed which would be the distance the object has traveled divided by the time is traveled for. Here's an Example: My Car traveled 10 miles in 10 hours so my speed would be 1mph as Distance: 10 miles divided by Time: 10 hours gives me 1mph.
Total distance (dtotal) traveled divided by the time (ttotal) it took to do that equals the average speed (savg) for the journey. It might be written like this:dtotal / ttotal = savg
Yes
The student's velocity is 4 meters per second. Velocity is calculated by dividing the distance traveled by the time taken. In this case, 20 meters divided by 5 seconds equals 4 meters per second.
Assuming t is time, you need to know the distance traveled in time t. Then, divide the distance by time to obtain speed (velocity).
To calculate speed, you divide the distance traveled by the time taken. In this case, the speed would be 30 meters divided by 10 seconds, which equals 3 meters per second. Speed is a scalar quantity, meaning it only has magnitude, not direction.
If an object moves from one place to another it has changed its position. For example, distance equals speed x time. If you travel at 3 feet per second for 10 seconds you have traveled 30 feet, or changed position by 30 feet.
A stone falls freely from rest The total distance covered by it in the last second of its motion equals the distance covered by it in the first three seconds How long does the stone remain in air?
The straight line distance would be 350 killometers