Share
A 300-kg truck moving rightward with a speed of 5 km/hr collides head on with a 1000kg car moving leftward with a speed of 100 km/hr. The tw
Question
A 300-kg truck moving rightward with a speed of 5 km/hr collides head on with a 1000kg car moving leftward with a speed of 100 km/hr. The two vehicles stick together and move with the same velocity after the collision determine the post – collision speed of the car and truck
in progress
0
Physics
3 years
2021-08-27T05:19:47+00:00
2021-08-27T05:19:47+00:00 1 Answers
18 views
0
Answers ( )
Answer:
The final velocity of the vehicles will be -75km per hour (leftwards).
Explanation:
Let us call , mass and velocity of the truck , mass and velocity of the car, and the final velocity of the vehicles.
The law of conservation of momentum states that
solving for we get:
putting in numerical values
(the negative sign indicates that the vehicles are moving in the leftward direction)
or -75.8 km per hour.