A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car's average acceleration? A. 0.17 m/s2 B. 1.67 m/s2 C. 6 m/s2 D. 7 m/s2 E. none of the above

Walking converts what type of energy into mechanical energy?

Explain the difference between how intrusive and extrusive igneous rock form and how those formation processes affect the minerals in these rock.

A larger constriction will result in less conductance. True False

A pendulum has a period of. 80s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth?

8. How does the direction of friction compare to an object's direction of motion?

What areas of the work force can science be applied to

Rank from fastest to slowest the following waves according to their speed of propagation: A. An earthquake wave B. A tsunami C. A sound wave in air D. A light wave

William Ferrel: introduced significant wave" forecasting measured under-surface currents using a current drag created a tide-prediction machine developed the first sonar device

A superhero flies 285 m from the top of a tall building at an angle of 35◦ below the horizontal. What is the horizontal component of the superhero's displacement?

Work occurs when an applied force results in movement of an object in the same direction as the applied force. an object is subjected to balanced forces resulting in movement of the object.