How much force is required to keep a 2 kilogram object moving horizontally with a speed of 4 meters a second

During a race, Rachel runs at a speed of 6 m/s. Four seconds later, she is running at a speed of 10 m/s. What is Rachels acceleration?

When sinkholes expand, creating isolated towers of rock, what is occurring? A. Rainwater is becoming more acidic B. Mature karst topography is being eroded C. Young karst topography is evolving into mature karst topography D.

Melanie recorded observations on the effect of two new fertilizers on the growth of plants. Three identical plants having a height of 15 cm were used for the experiment.

Does percent error give indication of accuracy or precision? Discuss.

If the wavelength of one wave is 0.25 meters, how many waves will be formed on a rope that is one meter long?

A force is applied to a 13.0 kg wagon to pull it down the sidewalk at a constant speed. The coefficient of kinetic friction is 0.65. Considering the resulting frictional force, what is the magnitude of the applied force?

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planers in orbit around the Sun.

What wave-like property of light causes it to bend when encountering an opening? A. Reflection B. all the above c. Refraction d. none of the above e. diffraction

Which of the following statements describe sliding friction? Select all that apply. 1.) a force that causes an object to increase speed 2.) a force in which one of the objects involved must be a liquid or a gas 3.

What do a broken rode and a volcano eruption have in common