Physics, 04.02.2020 21:53 johnandashley5p65r4a

Me find the control group, independent variable, and dependent variable for this experiment. different rose bushes are grown in a greenhouse for two months .the number of flowers on each bush is counted at the end of the experiment .

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The control group is the rose bush. The dependent variable is the variable which can be manipulated and can affect the independent variable. The dependent variable is on the x-axis while the independent variable is placed on the y-axis. The dependent variable is the number of months and the independent variable is the number of flowers in each bush.

Answer from: Quest

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 -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [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.

Answer from: Quest

Simple, don't do it. just don't go to that dock

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Me find the control group, independent variable, and dependent variable for this experiment. differe...