On a distance vs. time graph, the line of an object at rest is a

a. curved line with a slope of zero

b. flat line with a slope of zero

c. jagged line with a negative slope

d. curved line with a positive slope

A roller coaster is at the top of a hill and rolls to the top of a lower hill. if mechanical energy is conserved on the top of which hill in the kinetic energy of the roller coaster large

Which device often is designed to have liquid enclosed in a glass tube?

A motor cycle accelerates from rest for 15s at a constant acceleration of 2.2m/s. calculate its velocity at the end of this time

if a man jump 5 m on the Earth's surface. Then calculate the how much distance he will jump on the moon surface

select the correct scientific notation form of this numeral 541 5 * 10^2 5.4 * 10^2 5.4 * 10^2 5.0 * 10^2

A 0.8kg object accelerate at a rate of4 m/s2. What is the net force acting on a object

Which of the following is the best definition of an isotope? A. elements of the same kind with different numbers of neutrons B. elements of the same kind that have lost electrons C. elements of the same kind that have different electrical charges

Two cars approach each other; both cars are moving westward, one at 85 km/h, the other at 54 km/h. what is the magnitude of the velocity of the first car relative to (in the frame of reference of) the second car? answer in units of km/h.

What usually causes high concentration of minerals to form

The courtroom role that possesses the most discretion is?