A horizontal line above the time axis of a speed vs. time graph means an object is ___.

a) not moving

b) moving at a constant speed

c) moving at a constant velocity

Two rocks are moving through empty space in a straight line at the same speed. One has a mass of 10 kg, the other has a mass of 50 kg. Which statement about the rocks is true? A. Both will be stopped by the same amount of force acting against them.

How do nuclear power plnts generate the heat energy to turn water into steam?

How does cellphoe service compare between different cities? table 3 represent the rating of verizon and at& t in 22 different cities?

If the height of the ramp was 1.2 m above the floor, how long would it take for the marble to hit the ground after it left the ramp?

Which of the following scenarios will cause the current to stop flowing within a circuit? A. The switch within the closed circuit is opened. B. Insulating materials within the circuit are replaced with conducting materials. C. The circuit is closed.

Consider the moment when the spring is at its maximum compression. At that moment, the kinetic energy, the gravitational potential energy, and the elastic potential energy are, respectively, a - zero, at a maximum, and at a maximum b - at a maximum,

Ari, a young patient who is regularly treated by a psychiatrist, feels compelled to carry out repetitive tasks the same way very frequently. If Ari does not conduct these tasks with extreme precision, he can feel extremely nervous and uncomfortable.

A friend says, "Stars produce energy by a fusion chain reaction of helium into hydrogen." Evaluate the validity of this statement. A) It is an valid statement. Stars produce energy by a fusion chain reaction of hydrogen into helium.

If the mass of a material is 42 grams and the volume of the material is 15 cm^3, what would the density of the material be? answer: Unit:

35. An object of mass m moving at speed v0 strikes an object of mass 2m which had been at rest. The first object bounces backward along its initial path at speed v0.