Question

a car with a mass of 2400kg starts from rest and acquires a velocity of 32m/s2 in 12s. assuming that the acceleration is constant, find the weight, average velocity and average force of the car.​

Answer 1

Answer:

1. as we know formula of weight is = mass × acceleration due to gravity.

        given that: mass of the car is =2400kg and acceleration due to gravity is

         = 9.8m/$s^{2}$

        weight of car is = 2400×9.8 kg m/$s^{2}$

                                  = 23,520 kg m/$s^{2}$

   2. average velocity = initial velocity + final velocity /2  

                                    = 0 + 32 /2

                                    = 26

  3. force is = mass × acceleration

       now we have to find acceleration

      v = u + at

     32 = 0 + a × 12

     32/12= a

     2.6 = a

   so force = 2400 × 2.6

                  = 6240 n