How to determine how hot or cold a star is?

Speed is the rate at which what happens?

Suppose a 63-kg boy and a 40-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.

A drawing shows a triple jump on a checkerboard starting at the center of square a and ending at the center of square b. each side of the square measures 5.0cm. what is the magnitude and displacement of the colored checker during the triple jump

Every object in the universe exerts a force on every other object. This force is called

What is the law of inertia?

Two objects experience a 12 N electrical force between them. What force will the objects experience if the distance between them is doubled?

a submarine moving directly upward in the water at constant speed. The weight of the summer and it is 500,000 N. The submarines motors are off. The magnitude of the buoyant force acting on the submarine is

If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?

Which of the following is not the name of a space station that was in orbit around Earth?

Relationship between acceleration and free fall