a toy airplane is flying at a speed of 8 m/s with an acceleration of 0.9 m/s^2. How fast is it flying after 2 seconds?

What is is the ratio of the distance over which the force is applied to the distance over which the load is moved

Which has more momentum? A paper airplane with a mass of 10g flying at a velocity of 4m/s or a real airplane that is parked at a runway with a mass of 1000kg and a velocity of 0m/s

Two charged spheres are on a frictionless horizontal surface when does the charge of + 3.0•10^-6C. The other has a + 6.0•10^-6C charge. Sketch the two spheres showing off all forces on them.

Which of the following provides evidence that geologic activity occurred in the past on Earth's Moon? a) the revolution of the Moon around the Earth b) the axial tilt of the Moon c) the phases of the Moon d) the presence of solidified lava flows on

Can instantaneous velocity ever be negative?

If the mass of an object is 6 kg and its momentum is 72 kgm/s, what is its velocity? A. 18 m/s B. 12 m/s C. 9 m/s D. 72 m/s

Which of the following are not units of frequency: Hertz. m/s. waves/s

The efficency of a practical machine is less than 100% why?

Jill can use a force of 12N to lift a single box up 5m. How many of these boxes must she lift in a minute to use 60 watts of power?

What is s the best description of the constructive interference of light? A. two waves have the same direction of displacement. B. two waves have displacement in opposite directions. C. a longitudinal wave meets a transverse light wave D.