A man pushes on a trunk with a force of 250 newtons. The trunk does not move. How much positive work is done on the trunk?

0.0 J

-250 J

250 J

125 J

Which of the following is NOT an example of a network configuration? LAN WAN SAN MAN

Which change decreases the resistance of a piece of copper wire? (1) increasing the wire's length (2) increasing the wire's resistivity (3) decreasing the wire's temperature (4) decreasing the wire's diameter

Why cant you feel the force attraction between mars

Russ makes the diagram below to organize his notes about how Newton's first law describes objects at equilibrium.

A physics student tests the theory of projectile motion by leaping off a 225 meter tall building. She runs off the building horizontally at 12.5 m/s. How far away from the base of the building should she place the safety net?

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