The muzzle velocity of a 50.0 g shell leaving a 3.00 kg rifle is 400. m/s. What is

the recoil velocity of the rifle?

As a skydiver with a mass of 54 kg falls toward the Earth, she accelerates at 9.8 m/s2. What is the force of gravity acting upon the skydiver? What must be true about the force of air resistance acting on the skydiver?

Finding spring constant given displacement of spring and distance traveled by a cart

A car traveling at 24 m/s starts to decelerate steadily. It comes to a complete stop in 7 seconds. What is its acceleration?

Two cars of the same mass have different velocities. Which car has more momentum

The biosphere contains The oceans All plants and rocks All the earth All the living things

Identify the scenario below as to whether they increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening. 1. Tightening a string for greater tension 2.

Explain what each of the following scientists contribute to the atomic theory

A fully charged parallel-plate capacitor remains connected to a battery while a dielectric is slid between the plates. Do the following quantities increase, decrease, or stay the same? Select one or more: a. delta V increases b.

Energy is observed in two basic forms: potential and kinetic. Which of the following correctly matches these forms with a source of energy? a. the heat released from a living organism: potential energy b.

What should you do when operating a boat in large waves and high wind?