Reckless Rick driving along the road at 90 km/hr bumps into Hapless Harry directly in fornt of him who is driving at 88 km/hr. What is the speed of the collision?
m1•v1+m1•v2=(m1+m2)•v
7920
20km
To determine the speed of the collision between Reckless Rick and Hapless Harry, we need to calculate the relative velocity of the two vehicles.
Relative velocity is the difference between the velocities of the two objects. In this case, we subtract Hapless Harry's velocity from Reckless Rick's velocity to find the relative velocity.
Reckless Rick's velocity = 90 km/hr
Hapless Harry's velocity = 88 km/hr
To calculate the relative velocity, we subtract Hapless Harry's velocity from Reckless Rick's velocity:
Relative velocity = Reckless Rick's velocity - Hapless Harry's velocity
= 90 km/hr - 88 km/hr
= 2 km/hr
Therefore, the speed of the collision between Reckless Rick and Hapless Harry is 2 km/hr.