A 1500kg car has the same momentum as a 2500kg truck moving at 15 m/s, resulting in a calculated speed of 25 m/s for the car. The momentum equation used is p = mv, where p represents momentum, m is mass, and v is velocity. The truck's momentum is calculated as 37500 kg·m/s, leading to the car's speed being derived from the same momentum value divided by its mass. The conclusion drawn from the discussion indicates that the initial answer of 25 m/s is indeed correct.
PREREQUISITESStudents studying physics, particularly those focusing on mechanics and momentum, as well as educators seeking to clarify concepts related to mass and velocity in problem-solving scenarios.
Husker70 said:Homework Statement
A 1500kg car has the same momentum as a 2500kg truck moving at 15 m/s.
How fast is the car moving?
A. 15 m/s
B. 25 m/s
C. 35 m/s
D. 40 m/s
E. 50 m/s
Homework Equations
p = mv
The Attempt at a Solution
Truck = (2500kg)(15m/s) = 37500
Car = v=p/m = 37500/1500kg = 25m/s
This is what I answered but it says it wrong.
Any help would be appreciated.
Kevin