A train is accelerating at a rate of 2m/s2. if it's initial velocity is 20 m/s, what is its velocity after 30 seconds

Calculate the weight of the following: a. A car with a mass of 2500kg

1. What conditions must exist in order for a force to do work on an object?

Tech A says that as engines gain miles, the spark plug gap increases, which raises the ignition system's available voltage. Tech B says that misfire occurs when required voltage is higher than available voltage.

Kate is working on a project in her tech education class. She plans to assemble a fan motor. Which form of energy does the motor convert most of its electric energy into? light energy motion energy sound energy thermal energy

An experiment wants to find the wind speed that begins to lift an airplane. The strategy is to use 1/32 scale mode and wind tunnel. Why is this strategy valid?

An airplane flies due west (i. e. in the-X direction) between two airports. For one-quarter of the distance it travels at 650.0 km/h and the rest at 750.0 km/h. What is the average velocity (not speed) of the airplane?

1. The "Opportunity" rover that just landed on Mars transmitted music back to Earth. If the distance to Earth at the time was 9x107 km and radio waves (a kind of "light") travel with a speed of 3x108 m/s, how long did it take for the signal to reach

Precipitation is most likely occurring at A because it is located A. On a cold ocean surface B. On a warm land surface C. Near the cold front D. Near the warm front

A truck moving at 45 m/s passes a police car moving at 36 m/s in the opposite direction. if the frequency of the siren is 500 Hz relative to the police car, what is the frequency heard by an observer in the truck after the police car passes the

How do you increase the mechanical advantage of a ramp?