2 hours
The average speed for both men (together) is 6.66... (repeating) km per hour.
Each second has 1,000 msec in it. Multiply the number of seconds by 1,000 and you have the number of milliseconds in the same length of time.
ms or msec
275 km/hr
It is 2.5 km.
20 km/hr - 5 km/hr = 15 km/hr
KMHR was created on 1981-10-26.
Speed of recoil of the gun = change in momentum/mass of the bullet = 5 x 10-3 x 800/5 msec-1 = 0.8 msec-1
2 hours
1000 msec = 1 sec 30,000 msec = 30 sec
The average speed for both men (together) is 6.66... (repeating) km per hour.
1000
Each second has 1,000 msec in it. Multiply the number of seconds by 1,000 and you have the number of milliseconds in the same length of time.
ms or msec
3500 msec
170.88 MPH