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mhwalters
18.01.2020 •
Mathematics
Batman (mass=100 kg) jumps straight down from a bridge in to a boat (mass = 580 kg) in which a criminal is fleeing. the velocity of the boat is initially +14 m/s. what is the velocity of the boat after batman lands in it?
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Ответ:
Step-by-step explanation:
Linear Momentum
The momentum of a system of masses m1,m2,m3... with speeds v1,v2,v3,... is given by
When some interactions take place into the system of masses with no external forces interferring, the total momentum is not changed, which means that if the new speeds are v1', v2', v3'... then:
The problem relates the story of Batman (m1=100kg) who is initially assumed at rest and lands on a boat with mass m2=580 kg initially moving at 14 m/s to the positive reference. When the collision takes place, both masses join and a common speed
is achieved by the common mass. Applying the conservation of momentum, we have
Since![v_1=0](/tpl/images/0460/7224/5d094.png)
Solving for![v_b](/tpl/images/0460/7224/b4a54.png)
Ответ:
To find a positive and a negative angle coterminal with a given angle, you can add and subtract 360° if the angle is measured in degrees or 2π if the angle is measured in radians .
Step-by-step explanation: