PHYSICS HIGH SCHOOL

What is the mass of a falling rock if it produces a force of 147 n?
F=
M=
A=

Answers

Answer 1
Answer: F=147N;

Acceleration=9.8m/s2;

Mass=15kg

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When gasoline is burned in a car engine,_____ energy is converted into _____ energy.

Answers

Chemical Energy is converted into Mechanical Energy.

When gasoline is burned in a car engine, chemical energy is converted into mechanical energy.

Answer: D

Explanation: When gasoline is burned in a car engine,chemical energy is converted into mechanical energy.

What is average velocity of a particle?

Answers

Average velocity during a time interval is

       (the straight-line distance between the starting point and ending point,
         regardless of the route followed along the way)
divided by
       (the length of the time interval)
in the direction
       (from the starting point to the finishing point).
Avg. velocity = total Displacement / Total time taken
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A ball is equipped with a speedometer and launched straight upward. The speedometer reading after two seconds is 40 m/s; the ball is moving upward. At what approximate times would the ball display the following speedometer readings; 0 m/s and 30 m/s

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