A 5 Kg mass has an initial speed of 5m/s. After 3 sec, it has come to a speed of 70 m/s. a. What is the acceleration of the mass?
b. What net force is acting on the mass during those 3 seconds?

a

b

Explanation:

From the question we told that

   The mass is  m  =  5 kg

    The initial speed

    The time taken to attain is  t =  3 s

Generally from kinematic equation we have that

=>

=>  

Generally  the force acting is mathematically represented

=>        

=>        

an enlarged virtual image

33: i think it’s b