A 15 kg bullet leaves the 30 cm long barrel of a gun at a speed of 240 m/s.

a. find the exit velocity of the bullet.

b. find the average force exerted on the bullet by the expanding gases as the bullet moves through the length of the 30 cm barrel

How much force is acting on a 150g object in free fall

Which of the following actions will directly affect the gravitational force between two objects? Increasing the mass of the objects Increasing the pressure on the objects Decreasing the temperature of the objects Decreasing the speed of the objects

An arrow with a mass of 0.015 kg is shot at 91 m/s and sinks 11 cm into a target. a.) Find the force of friction provided by the target. b.) Find the impulse the wood exerts on the bullet. c.) Find the time it takes for the bullet to stop.

The Richter scale measures the __ of an earthquake.

If a force of 450N pushes a box 4 meters in 2 seconds, how much power was developed?

The difference in electronegativity values between H and O is 1.4. What type of bond will these elements form?

True or false. when light passes from one medium to another the speed changes.

Examples of a scalar

How did changing from a light drizzle to a downpour affect the river and the sediment The river increased its slope. The volume of the river decreased. The velocity of the river increased! There was more erosion in the stream.

Which of the fundamental forces explains the structure of atoms and molecules?