A train is accelerating at a rate of 2 m/s. If its initial velocity is 20 m/s, what is its

velocity after 30 seconds?

Given:

Equation:

Plug in:

Answer:

What physical fitness component is the cornerstone that creates a pathway to improving your other fitness levels?

Which of the following is NOT an important positive motivating factor for those considering exercise? a. building strength, endurance, and energy b. reducing time commitments to family c. improvement of health and performance d.

A space heater primarily converts electrical energy into A. light energy B. mechanical energy C. sound energy D. thermal energy

When electrical energy is being used by an electric light, what really happens to the energy? A. it is given off as other forms of energy B. it changes to matter C. it stops at the electric light D. it disappears

The charge of an atom from an excited state to the ground state always requires a. an increase in electron energy b. release of visible light c. absorption of energy d. emission of electromagnetic radiation

What kind of movement does the heat within the core and mantle directly generate?

Explain why Newton's first law of motion can be difficult to observe in moving objects?

No force is necessary to

A boat has a mass of 4040 kg. Its engines generate a drive force of 4660 N due west, while the wind exerts a force of 880 N due east and the water exerts a resistive force of 1400 N due east. Take west to be the positive direction.

Define the word projectile