PART A) The acceleration of gravity is 9.8 m/s^2 What is the magnitude of the net force on a(n) 82 kg driver operating a dragster as it accelerates horizontally along a straight line from rest to 67 m/s in 8.4 s? Answer in units of kN PART B) The tension in a string from which a 7 kg
object is suspended in an elevator is equal to 74 N. What is magnitude of the acceleration a of the elevator? The acceleration of gravity is 9.8 m/s^2 Answer in units of m/s^2

0.654 kN

Explanation:

If the driver accelerates from rest to 67 m/s in 8.4 seconds, then the magnitude of the acceleration is:

a = (67 - 0)/ 8.4 = 7.976 m/s^2

Then the net force on the 82 kg driver is:

F = m * a = 82 * 7,976 = 654 N

Therefore, in kN the force's magnitude is:  0.654 kN

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

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.