If the vehicle travelled at a speed of 88.6 km/h is now at rest, find the change in momentum for both the 68.4 kg adult driver and the 34.2 kg child passenger.
momentum change = mass*changeinvelocity
I wonder if "both" means masses added together.
Came here looking for the same exact same question haha thought it was funny.
To find the change in momentum for the adult driver and the child passenger, we first need to calculate their initial and final momenta. The formula for momentum is:
Momentum = mass * velocity
Let's calculate the momentum for each person:
For the adult driver:
Mass of the adult driver = 68.4 kg
Initial velocity = 88.6 km/h = (88.6 * 1000) m / (60 * 60) s ≈ 24.6 m/s
Final velocity, since the vehicle is at rest, will be 0 m/s.
Momentum of the adult driver = Mass * Velocity
= 68.4 kg * 0 m/s
= 0 kg⋅m/s
For the child passenger:
Mass of the child passenger = 34.2 kg
Initial velocity = 88.6 km/h = (88.6 * 1000) m / (60 * 60) s ≈ 24.6 m/s
Final velocity, since the vehicle is at rest, will be 0 m/s.
Momentum of the child passenger = Mass * Velocity
= 34.2 kg * 0 m/s
= 0 kg⋅m/s
Therefore, the change in momentum for both the adult driver and the child passenger is 0 kg⋅m/s, as there is no change in velocity and the final momentum is zero.