A truck driver is going opposite traffic on a one-way street. A police officer sees him but doesn't stop him. Why didn't the police officer stop him?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.