A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

A) 3.5 m

s2

B) 5.7 m

s2

C) 20 m

s2

D) 70 m

s2

Five metals that are more useful for electroplating

The main strength and weakness of traditional economy?

How much time does it take a skater to increase her speed uniformly, from 3.0 meters per second to 7.0 meters per second, over a distance of 10 meters? a. 1.0 S b. 4.0 s C 6.0 s d. 2.0 s

Does an object of greater mass have greater kinetic energy

The earth take 365.25 days to orbit the sun. What is it's relative speed to the star in days? hours? Hint: v=d/t

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits.

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars

A 111.6 g sample of iron was heated from 0°C to 20°C. It absorbed 1004 J of energy. What is the specific heat capacity of iron?

A car is driving towards a brick wall at a constant velocity (don't try this at home!) and the driver honks the horn of the car. the sound of the horn reflects from the wall and the echo is heard by the driver.

Mass number of an atom with 11 protons