Given Data: Impulse, = 100 Ns J=100Ns Mass of the toy car, = 2 kg m=2kg Initial velocity, = 0 m/s v i =0m/s (since the car starts from rest) Calculation: Since the car starts from rest, the change in velocity v is equal to the final velocity v f . = = 0 = v=v f v i =v f 0=v f Using the impulse-momentum theorem: = J=mv 100 Ns = 2 kg 100Ns=2kgv f Solving for the final velocity v f : = 100 Ns 2 kg v f = 2kg 100Ns = 50 m/s v f =50m/s