What effects gravitational force between objects

An arrow is fired vertically upwards by a bow and reaches an altitude of 134m. find the initial speed of the arrow on the ground level.

What is needed to create change in a system?

What subatomic particle determines the identity of an element

If the number of particles is increased in a balloon what happens to the pressure inside of it?

A 0.50kg object is at rest. a 3.00N force to the right acts onthe object during a time interval of 1.50s. a. what is the velocity of the object at the end of this timeinterval? b. at the end of this interval, a constant force of 4.

A 7700-kg box car traveling at 14 m/s strikes a second car at rest. The two stick together and move off with a speed of 5.0 m/s. What is the mass of the second car?

What will happen if there is a change in a magnetic field?

Question 2 10 pts The voltage in a particular circuit is 10.0 V. The current in the circuit is 20 A. What is the resistance? A. 2.0 B. 30 C. 200 D. 0.5

Where in the motion is the magnitude of the net force on the object a maximum? where in the motion is the speed a maximum?

Which movies are longer than 2 hours?