A car of mass 495 kg is moving 32.0° North of East at a speed of...

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?

Solutions

Expert Solution

m =495, v = 19.6 m/s

p=mv = 495x19.6

p= 9702 kg.m/s

p_x = mv_x =mv cos(32) =9702cos(32)

p_x =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

genius_generous answered 1 year ago

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