What is the force exerted by a solid surface that opposes gravity?

Niagara Falls is a set of very large waterfalls located on the border between New York and Ontario, Canada. Over 200,000 cubic feet of fast-moving water falls approximately 180 feet every second.

Two grocery carts have the same initial total momentum. The two carts collide, and now cart B has a greater final velocity.

A ball is thrown vertically upward from a height of 6 feet with an initial velocity of 41 feet per second. how high will the ball go? (round your answer to two decimal places.)

Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology? organs muscles fluids bones

While spinning down from 500 rpm to rest, a flywheel does 3.9 kj of work. this flywheel is in the shape of a solid uniform disk of radius 1.2 m. what is the mass of this flywheel?

Briefly describe why these searches suggest that star-like (our planet-like) objects and black holes cannot account for all the dark matter in the halo of our galaxy.

What two units of measurement are necessary for describing speed?

If 3,600 J of work is done in 3.0 s, what is the power? 0.00083 W 1,200 W 3,600 W 11,000 w

Julia rides her horse 12 miles in 45 minutes. What is her average speed in mi/min? Show Your Work.

What happens to the inertia of an object of its mass is decreased?