A rocket is fired in deep space, where gravity is negligible. If the rocket has a mass of 6000 kg and ejects gas at a relative velocity of 2000 m/s, how much gas must it eject in the first second to have an initial acceleration of 25.0 m/s?

Two rather unequal cars are competing in a drag race. For simplicity, let's assume that the accelerations of the cars are constant. Car 1 has an acceleration of 3.3 m/s2, while Car 2 has an acceleration of 5.9 m/s2. Car 2 gets off to a late start, 0.

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.

Why is the halo of a galaxy the most important part of a galaxy?

Infrared observations of the orbits of stars close to the galactic center indicate a small object at the center with a mass of about how many solar masses?

What is the fate of solar radiation that reaches the earth?

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?

Why does a buoyant force act on every object in a fluid? Pressure pushing up on the bottom of the object is greater than the pressure pushing down on the top.