The space shuttle's solid rocket boosters were pairs of rockets used during the first 2 min of powered flight. each booster burns 690,400 kg of propellant in 2.5 min. how much propellant (in kg) does each booster burn in 1 min?

276,000 kg per minute

Explanation:

From the question each booster burns 690,400 kg of propellant in 2.5 min.

To calculate the amount of propellant each booster burns in a minute, simply divide 690,400 kg by 2.5 min.

=276,160 kg/min or 276,160 kg per minute

thus for every 1 min, 276,160 kg of propellant is burnt by each booster.

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.