A red car with a mass of 3.0 kg traveling at 8 m/s collided with a blue car with a mass of 2.0 kg, which is at rest. The velocity of the blue car after the elastic collision is 9.6 m/s. What is the velocity of the red car?

What is the gravitational torque on the beam about an axis through the hinged end when the beam is at the upper position?

In a downtown office building, you notice each of the four sections of a rotating door has a mass of 75 kg.

Newton's law of gravitation says that the magnitude f of the force exerted by a body of mass m on a body of mass m is f = gmm r2 where g is the gravitational constant and r is the distance between the bodies. (a) find df/dr.

Can we see the back side of the moon from earth?

An atom can act as a tiny magnet due to the spinning motion of charged particles called neutrons. true or false?

January 1st 37°F January 7th 48°F January 14th 52°F January 18th 51°F January 21st 45°F January 25th 41°F January 31st 55°F When looking at a data set of numbers, the mean is the average. Look at the table above.

The vector quantity that defines the distance and direction between two positions.

Which statement is true? Select one of the options below as your answer: A. Quarks always occur in groups with leptons. B. Quarks always occur independently. C. Quarks always occur in groups with other quarks. D.

Peat is actually the early stage of

Explain how electric current is able to flow.