A car travels 30 km north in 25 min. and 40 km east in 35 min. What is the total time in hours? Be careful to carry over the proper number of significant figures when you convert to hours.

What velocity must a 1340 kg car have in order to reach the momentum of a 2680 kg truck traveling at a velocity of 15 m/s to the west?

What is the unit for mass?

A fan cart initially has an acceleration of 1.6m/s/s when it's fan is directed straight backwards. If you rotate the fan by 45°, by what percentage do you expect the fan cart's thrust to decrease? (Answer should be in units of %)

Select the order in which the flow of current is listed from greatest to the least. closed circuit, open circuit, short circuit short circuit, closed circuit, open circuit open circuit, short circuit, closed circuit

The strength of gravitational force is affected by the mass of objects and which of the following?

Which statement describes the formation of a nebula? A. An elliptical flattened disk begins. B. A bulging core with irregular stars around it forms. C. A large flattened core at the center contracts. D. Gases from a dead star gather and contract.

What are 4 things that can happen to a light wave when it hits an object?

Which of the following is NOT a strategy to prevent falls? a. keeping walking surfaces free from moisture and clutter b. replacing damaged electrical cords c. installing handrails for stairs d. keeping a ladder handy for reaching high places

What are a few things that could not be used as evidence?

Examples were friction is not useful