On a high way a car is driven 80 km the first 1 he of travel, 50km during the next 0.5 he, and 40 km in the final 0.5 hr. What is the cars average speed for the entire trip?

A 2500-kg car falls over a cliff and converts 1000,000J of PE into KE. a. How much mechanical energy does the car have throughout the trip? b. How high is the cliff? c. With what velocity does it land?

How many legs does an arachnid have?

What can cause a gap in the rock record

An atom with (two, four, eight, or six valence electrons) is the most stable?

You can hear the sound of an approaching train long before you see it by placing your ear on metal track

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.

If a car rolls gently off a vertical cliff, how long does it take to reach 90km/hr.

In the game of volleyball, what skill relates to Newton's second law

The minimum breaking distance d in feet for a typical vehicle can be modeled with the equation d (v) = 0.045v2, where v is the vehicle's speed in miles per hour.