In 20 seconds mass accelerates from rest to a velocity of 450 m/s. What is the acceleration of the mass?

The energy associated with the motion and position of an object is called A. kinetic energy. B. potential energy. C. gravitational potential energy. D. mechanical energy.

A pair of sunglasses says that it keeps you from getting wrinkles around your eyes. what is the purpose of this claim? A. To show an unbiased source B. To get you to buy the sunglasses C. To prove that the sunglasses work D. To provide evidence

Is the circuit you created a parallel, series or a series/parallel circuit? Support your answer with a description of this type of circuit.

A student sits on a rotating stool holding two 2 kg objects. When his arms are extended horizontally, the objects are 0.9 m from the axis of rotation, and he rotates with angular speed of 0.74 rad/sec.

The energy content of a certain food is to be determined in a bomb calorimeter that contains 3 kg of water by burning a 2-g sample of it in the presence of 100 g of air in the reaction chamber. If the water temperature rises by 3.

What is the name of the force that opposes or slows down the motion of objects

If you jump into the air, are your legs pushing you away from the earth or pushing the earth away from you?

All of the following would be useful in trying to obtain procedural information to replicate an experiment previously published except for a lab journal used in the original experiment. a published scientific journal. a dictionary.

What happens if the polar jet stream shifts to bring air from the north farther south

What do we call seismic waves that are transmitted along the outside of earth?