A stationary 0.1-g fly encounters the windshield of a 1500-kg automobile traveling at 120 km/h.
(a) What is the magnitude of change in momentum of the car due to the fly?
(b) What is the magnitude of change of momentum of the fly due to the car?
(c) Approximately how many flies does it take to reduce the car's speed by 1 km/h?
I have solved:
(a)= .012kg*km/hr
(c)= 126050
PLEASE HELP ME WITH (B)!!! I thought it was 3033E-3 but this is incorrect so I do not know how to do the work either. PLEASE EXPLAIN W/DETAIL and give answer in kg*km/hr !!PHYSICS PLEASE HELP What is the magnitude of change of momentum of the fly due to the car?
Use the conservation of energy principle. The total momentum of car-plus-fly before collision, equals the total momentum of car-plus-fly after collision. In order to keep the total the same, any momentum which is GAINED by the fly must be LOST by the car. That means the magnitude of the momentum change of the car, is the same as the magnitude of the momentum change of the fly.PHYSICS PLEASE HELP What is the magnitude of change of momentum of the fly due to the car?
im pretty sure the change in mometums are equal because of consevation of mometum, so b is .012kg*km/hr
