A dart hits a dartboard and stops in 0.50s. The net force on the dart is 20N during the collision. What is the magnitude of the change in momentum of the dart?

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Linear Momentum and Force | Physics
Calculate momentum given mass and velocity. ... Force acting over time can change momentum, and Newton's second law of motion, can be stated in its most ...
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Step 1: Set up a relation between the change in momentum and net force
Momentum is defined as the mass multiplied by the velocity of any object.
Momentum= mass * velocity
P=mv or \Delta P = \Delta (mv)
Momentum ( P ) = [mass * (acceleration * time)] \because \text{velocity = } \text{ acceleration * time }
Momentum (P) =[(mass * acceleration) * time]
Momentum (P) = Net force F_{net} * time \Delta t
Net force F_{net} = \frac{P}{t} or Net force F_{net} = \frac{\Delta P }{\Delta t}
Step 2: Calculating the change in momentum of the dart
Given that
Net force on the dart F_{net} = 20 N
Time take for the dart to hit a dartboard t = 0.50 sec
Change in momentum \Delta P = F_{net} * \Delta t
\Delta P = 20 N * 0.50 s
\Delta P = 10 Ns
Hence, change in momentum of the dart \Delta P = 10 (kg m)/s