A runner runs 300 m at an average speed of 3.0 m/s. She then runs another 300m at an average

speed of 6.0 m/s.

What is her average speed for the total distance of 600m?

A 2.0 m/s

B 4.0 m/s

C 4.5 m/s

D 8.0 m/s

What is the base unit for mass?

The illustration above depicts a string being stretched and then released. Changes in both potential and kinetic Energy occur during this process. Which statement most accurately describes the change in potential or kinetic energy

A ship sends a sound wave below it to the ocean floor to see how deep the ocean is at its location. If it takes 5 seconds for the sound wave to travel to a depth of 3625 meters and then reflect back to the ship, how fast is the sound wave traveling?

If the charge is tripled for two identical charges maintained at a constant separation, The electric force between then will be changed by what factor? A: 1/9 B: 2/3 C: 9 D: 18

José has a monthly budget of $80 to put toward his hobby of building model trains. He can afford to pay cash for his purchases, but he uses his credit card to buy items at the hobby store for amounts that do not exceed his budget Assuming José pays

Scientists can find the absolute age of a rock by using a uranium 235 dating b carbon 14 dating c carbon 12 dating d relative dating

What do scalars measure force acceleration magnitude velocity

Why do metals differ in specific heat? why is Al much higher than gold

Witch kind of force do you exert on an object when you pull towards you A-Applied force B-Attractive force C-Drag force D-Normal force

a solid sphere is rolling without slipping along a horizontal surface with a speed of 5.5 meters per second when it starts up a ramp that makes an angle of 25 degrees with the horizontal what is the speed of the sphere after it has Road 3M up the