Kinetic energy of an object changes when the speed of the object doubles why

Choose if the quantity indicated is a vector or a scalar. Quantity: the number of coins in a piggy bank Type of quantity:

Steel has a density of 7.8 g/cm3. what is the mass of a block of steel with a volume of 600.0 cm3?

Which force gravitational or electrical repels as well as attracts?

What is the speed of a wave if the wave length is 100 m and the period is 20 s? A. 80 m/s B. 120 m/s C. 2,000 m/s D. 5 m/s

17. Which statement accurately describes the interaction between the poles of two bar magnets? A A north pole repels a south pole. B A north pole attracts a north pole OC A north pole attracts a south pole.

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?

In what way are all forms of potential energy the same?

Enise is riding her bike and falls to the ground. During the collision, she hits both grass and cement. Which best explains why Denise had fewer injuries to the area of her body that hit the grass?

A rock is dropped into the Grand Canyon. It takes 18 seconds to hit the bottom. Calculate how deep the canyon is.

A change from one form of energy into another is called a. gravitational potential energy. b. work. c. conservation of energy. d. an energy transformation