Which quantity is scalar?

(1) mass (3) momentum

(2) force (4) acceleration

An object at rest is suddenly broken apart into two fragments by an explosion one fragment acquires twice the kinetic energy of the other what is the ratio of their masses

The reaction shown below is used in the production of steel. It is an exothermic reaction. An engineer thinks that by finding the correct catalyst, he can reduce the amount of energy released by the reaction.

A room is 16 ft x 12 ft x 12 ft. would air enter or leave the room if the temperature changed from 27°c to - 3°c while the pressure remained constant? Determine the volume of the air which moved in or out of the room.

In what sense are our bodies machines?

An object under only the force of gravity is said to be in

If you are asked to determine an objects speed, what information must you have? A: distance and period of time B: distance and direction C: period of time and direction D: distance and change in position

What is the kinetic energy of a 1150 kg sports car traveling down the road with a speed of 29 m/s?

3. A 2,000-kilogram railroad car moving at 5 m/sec to the east collides with a 6,000-kilogram railroad car moving at 3 m/sec to the west. If the cars couple together, what is their velocity after the collision?

A pendulum swings with amplitude. 02 m and period of 2 s what is its maximum speed

What bone cells respond to stress?