What is the equation for weight

A runner achieves a velocity of 11.1 m/s, 9 sec after he begins. What is his acceleration? Given: Equation: Plug in: Answer:

Why did the ice arena get so hot after the big hockey game answer key?

A rocket-driven sled running on a straight, level track is used to investigate the effects of large accelerations on humans. One such sled can attain a speed of 1600 km/h in 2.20 s, starting from rest.

If you find two stars with the same Right Ascension, are they necessarily close together in the sky? Why or why not?

An english scientist created the first periodic table of elements

A 13,500 kg railroad freight car travels on a level track at a speed of 4.5 m/s. It collided and coupled with a 25,000 kg second car, initially at rest and with brakes released. What is the speed of the two cars after collision

What type of waves move energy forward, but the source makes up and down

Why do helium balloons float? Talk about density of atoms and compare to elements in the air.

Identify and describe the metal in table salt

150kg object takes 1.5minutes to travel 2,500 meter straight path it begins the trip traveling 120m/s and decelerates to a velocity of 20m/s whats its acceleration