A 2500-kg car falls over a cliff and converts 1000,000J of PE into KE.

a. How much mechanical energy does the car have throughout the trip?

b. How high is the cliff?

c. With what velocity does it land?

The period of 440 hertz sounds wave is how many second

Current and Resistivity Concepts1. Electric charge is conserved. As a consequence, when current arrives at a junction of wires, the charges can take either of two paths out of the junction and the numerical sum of the currents in the two paths

Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a single mark on the sidewalk next to the snail. What will Julie use the mark for initially?

a car is running with the velocity of 72 km/h. what will be it's velocity after 5 seconds if it's acceleration - 2 m/s²?

Which gas in earths atmosphere protects earth by reflecting ultraviolet radiation

Which of the following is an example of applied research?

A Cadillac Escalade has a mass of 2,569.6 kg, if it accelerates at 4.65 m/s^2 what is the net force on the car?

If you are trying to balance a seesaw and you have a higher mass on the left, should the mass on the right be placed at a greater distance or lower distance to balance it? Why?

A car travels 300 km in the first 3 hours of a trip. Then it hits traffic and travels only 60 km during the last hour. What is the average speed of the car? a.) 180 km/h b.) 100 km/h c.) 90 km/h d.) 120 km/h

What is the purpose of using a wedge? A. separates objects B. keeps objects together C. allows you to exert force over a distance