What is used to measure the mass of an object?

Car A is traveling west at 60 mi/h and car B is traveling north at 40 mi/h. Both are headed for the intersection of the two roads. At what rate are the cars approaching each other when car A is 0.4 mi and car B is 0.3 mi from the intersection?

A machine does 1000 J of work in 3.5 minutes (210 seconds). What is the power output of this machine?

Over the last 100 years, what has happened to average global temperature? . It has risen. It has fallen. It has stayed the same. Average temperature never changes.

Which of the following are units for expressing rotational velocity, commonly denoted by ω?

Velocity times height

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks

Average mass of a toy car (small, hot wheels) ?

A cannon directed straight upward launches a ball with an initial speed v. The ball reaches a maximum height h in a time t. Then, the same cannon is used to launch a second ball straight upward at a speed 2v.

Does the sun fuse hydrogen into helium or vice versa?

Is it possible to put a distance versus time graph to be universal go mine