Answer:
Explanation:
(newtons first law)
conservation of momentum law states :
momentum before collision = momentum after collision
momentum p (kg-m/s)= mass * velocity
say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s
say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s
total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s
momentum after collision = 10 000 kg-m/s
mass now = 1 000 kg+2 000 kg = 3 000 kg
10 000 = 3 000 kg* velocity m/s
10 000/3 000 = velocity
3.33 m/s = velocity after collision
an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied
Answer:
2.33651226158 m
Explanation:
From the question the required data is as follows
f = Frequency of the initial note = 146.8 Hz
v = Velocity of sound in air = 343 m/s
The wavelength of a wave is given by
The wavelength of the initial note is 2.33651226158 m
Answer:
Explanation:
As we know that here final equilibrium temperature is 0 degree C
so we can use energy conservation here
heat given by the cube = heat absorbed by the ice
so we have
so here we have
C) it decreased
because atmospheric pressure decreases as we move up.
The particle in the air match the mass with the particles around the balloon stoping it from floating any higher
