A ball is rolling down a hill at + 1.0 m/s, The ball is uniformly accelerating at

+4.9 m/s?, What will the ball's velocity be 4.0 s later?

+8.9 x 100° m/s

+2.0 x 10^1 m/s

+2.1 x 10^1 m/s

-1.9 x 10^1 m/s

What causes the earth's tectonic plates to move around?

The centers of two15.0-kilogram spheres are separated by 3.00 meters. The magnitude of the gravitational force between the two spheres is approximately?

Which types of heat transfer that allows heat to flow from hot objects to colder object? A. convection, but not conduction or radiation B. convection, conduction, and radiation C. convection and radiation, but not conduction D.

What is molecular magnet

Based on the height of the Sun in the sky, at what time of year is it summer in the Southern Hemisphere? When is it winter in the Southern Hemisphere?

Give the definition for diffusion. (A) gas molecules mix unequally average distance between collisions (B) gas molecules escape from a container into a vacuum through a small hole (C) gas molecules mix equally (D) gas molecules spread out in a

As resistance goes up, what happens to the current?

1. A 0.828-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. a) Find the momentum of the electron. b) Find the kinetic energy of the electron.

When are you most aware of your motion in a moving vehicle: when it is moving steadily in a straight line or when it is accelerating?

The force of gravity on a person or object on the surface of a planet is called?