What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour?

What are precautions in a simple pendulum experiment

State the reason why it may not be possible to suck liquid into your mouth using a drinking straw on the surface of the moon

In which of the following situations is an object not accelerating? A. An airplane changes course at a constant speed. B. A water-skier gains speed in a straight line as she stands up. C. A man walks in a straight line without changing his speed. D.

The mass of a hot air ballon including its cargo is 320 kg. the hot air inside it has a density of 1.19 kg/m^3. the density of the outside air is 1.29 kg/m^3. what is the buoyant force acting on the ballon when it is floating above the ground?

After brushing, Fluffy's fur has a charge of + 8.0 * 10-9 coulombs and her plastic brush has a charge of - 1.4 * 10-8 coulombs. If the distance between the fur and brush is roughly 5.

A ball is thrown with an initial speed of 10. meters per second. At what angle above the horizontal should the ball be thrown to reach the greatest height? (1) 0° (3) 45° (2) 30.° (4) 90.°

If you change the mass of a moving object, you change its?

Acceleration increases over time once a force is applied to the object. Given a force of 10.0 Newtons, which mass will have the greatest acceleration?

Which resources does the National Park Service manage? Check all that apply. seashores monuments memorials wildlife refuges ecosystems endangered species

Why are large astronomical bodies round