force*time=mass*changeinvelocity
force*time=mass*(40W-30E)
magnitudeforece=mass/time(sqrt(40^2+30^2))
PLEASE HELP! and include steps of how you solved it!
What magnitude of force, acting for 0.025 s, will change the velocity of a 100 g ball from 30 m/s eastward to 40 m/s westward?
2 answers
The magnitude of the momentum change is 0.1 kg * 50 m/s = 5 kg m/s.
(Think about the 3:4:5 velocity vector right triangle)
Divide the momentum magnitude change by the time interval to get the average force (or the actual force, if it is assumed constant).
F = 5/0.025 = 200 N
(Think about the 3:4:5 velocity vector right triangle)
Divide the momentum magnitude change by the time interval to get the average force (or the actual force, if it is assumed constant).
F = 5/0.025 = 200 N
2 answers