Time, Speed and Distance

Speed = 55 mph. Time = 240 minutes = 4 hours. Distance = Speed * Time = 55 * 4 = 220 miles.

Speed is defined as distance divided by time. Speed = 40 km / 8 hours = 5 km/hr.

Distance = Speed * Time. Distance = 30 miles/hour * 5 hours = 150 miles.

Distance = Speed * Time = 120 km/hr * 2 hours = 240 km.

Distance = speed * time. Speed = 10 m/s. Time = 10 min = 600 seconds. Distance = 10 * 600 = 6000 m = 6 km.

Average speed is defined as total distance divided by total time. Here, 250 km / 6 hours = 41.666... km/hr, which rounds to 41.67 km/hr.

Average speed = Total distance / Total time. Total distance = 20 + 20 = 40 km. Time 1 = 20/40 = 0.5 hr. Time 2 = 20/20 = 1 hr. Total time = 1.5 hr. Average speed = 40 / 1.5 = 26.66 km/hr.

Average speed is calculated as total distance divided by total time. Here, 10 m / 15 s = 2/3 m/s, which is approximately 0.67 m/s.

Speed = 30 km/hr. Time = 75 minutes = 75/60 hours = 1.25 hours. Distance = Speed * Time = 30 * 1.25 = 37.5 km.

Let the total distance be 2d. The time taken for the first half is d/21 and the second half is d/24. Given d/21 + d/24 = 10, we find 15d/168 = 10, which simplifies to d = 112. The total distance is 2d = 224 km.

Speed = Distance / Time = 152 / 3.5 = 43.428... km/hr.

Distance is calculated by multiplying speed and time. 17 km/hr * 1.5 hr = 25.5 km.

Speed = Distance / Time = 330 / 7 = 47.14 km/hr.

Time = Distance / Speed. Time = 372 / 60 = 6.2 seconds. To cover 900 m in 6.2 seconds, the speed must be 900 / 6.2 = 145.161... m/sec, which rounds to 145.2 m/sec.