A car travels 100 meters in 4.0 seconds. find its average velocity.

A race driver has made a pit stop to refuel. after refueling, he leaves the pit area with an acceleration whose magnitude is 6.35 m/s2; after 4.0 s he enters the main speedway.

A fisherman uses sonar to find a shoal of fish. A pulse of ultrasound is sent out and the reflection is detected 0.4 seconds later. How long did it take the sound to travel from the boat to the fish?

Which of the four statements true? a. An ideal emf device sets up a potential difference and a real emf device does not. b. A real emf device sets up a potential difference and an ideal emf device does not. c.

A certain steam turbine is designed to be used as both a power generator and a pump. When used as a generator, the turbine provides enough power to do 3 * 10^10 J of work in 1 min. What is the power output of the turbine?

If two teams playing tug-of-war pull on a rope with equal but opposite forces, what is the net external force on the rope?

What happens if you drop out of navy seals?

X-component is 5, and y-component is 4. what is the angle of vector?

An open train car, with a mass of 2150 kg, coasts along a horizontal track at the speed 2.83 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.95 s at the rate of 481 kg/s.

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. Which statement is true for this reaction?

Why does an object in motion stay in motion unless acted on by an unbalanced force? A) because forces are what stop and start motion B) because balanced forces cannot exist in nature C) because motion is the inherent state of all matter D) because