Why might a scientist repeat an experiment if she/he didn't make a mistake in the first one? experiments are repeated to a) make sure she/he gets identical results. b) see if any portion can be skipped or ignored. c) prove that your results were incorrect the first time. eliminate d) check to see if the procedure was correct and nothing was left out.

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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explanation: