Give several examples of a mechanism, machine or system that has two

or more simple machines working together to complete work.

If the molecules in a substance start to move quickly, what happens to their kinetic energy?

A 640 kg automobile slides across an icy street at a speed of 63.9 km/h and collides with a parked car which has a mass of 816 kg. The two cars lock up and slide together. What is the speed of the two cars just after they collide?

All of the earth's life and weather exists within the stratosphere. a. True b. False

The speedometer of a car moving to the north reads 50 mph at an intersection. At an intersection, another car crosses in front of it traveling at 50mph which statement is the most accurate description of the motion of the vehicles A: the vehicles

An object with mass M slides down a frictionless hill with a height H. What is the velocity of the of the object at the bottom of the hill if it started from rest? - is it 0?

A circular curve of radius 150 m is banked at an angle of 15 degrees. A 750-kg car negotiates the curve at 85.0 km/h without skidding. a) what is the normal force on the tires exerted by the pavement.

A bird is flying at the speed of 24m/sec and accelerates to 75m/sec. It took 3.2 sec, what was the birds acceleration?

You have a suspect on the run in a dry, wooded area; they've ditched the gun but are hiding from you. how long do you have to find them before vital proof they fired a gun will probably no longer be on their body? A. a few hours B. about 24 hours C.

The atoms of a molecule come from two or more?

An airplane flies 58 miles in 5 minutes. What is its average speed in miles per hour?