In: Physics
A car of mass 495 kg is moving 32.0° North of East at a speed of 19.6 m/s. What is the magnitude of the momentum of the car? (magnitude - how big is it? ignore direction)
Momentum is a vector quantity, and just like any other vector quantity, we can take components. What is the East-West component of the momentum of the car?
A truck of mass 2.74×103 kg is moving due East at a speed of 4.30 m/s. What is the momentum of the truck?
m =495, v = 19.6 m/s
p=mv = 495x19.6
p= 9702 kg.m/s
px = mvx =mv cos(32) =9702cos(32)
px =8227.7 kg.m/s
Truck of mass m =2.74x10^3 kg, v =4.3 m/s
p = 2.74x103x4.3
p= 11.782x103 N