How much kinetic energy does a 1500 kg car have if it's moving at 15 m/s

Use Hooke's Law to determine the work done by the variable force in the spring problem. Nine joules of work is required to stretch a spring 0.5 meter from its natural length. Find the work required to stretch the spring an additional 0.40 meter.

What is the kinetic energy of an object that has a mass of 50.0 kg and a velocity of 18 m/s? A. 450 J B. 900 J C. 8,100 J D. 16,000 J

Is it possibly to make special swords made out of light that can cute through anything like in the movie star wars?

Where is the moon in relation to Earth and the sun during phase B?

You have a ruler that is marked to the nearest half centimeter. Which of these measurements is written with the correct amount of precision? A) 2.0cm B) 3.14cm C) 5 cm D) 100cm

What is meant by the statement, "a thermometer measures its own temperature"?

How does electrical forces act on a maglev train

Three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another.

How does momentum before an inelastic collision compare to the momentum after the collision?

Why should people pay attention to scientists when making decisions? A) scientist are the smartest people B) Scientist make up facts that they wish true C) scientist use experiments to test their ideas D) scientist are always correct