To solve this problem we will apply the concepts of energy conservation and Newton's second law that defines force as the product of the object's mass with its acceleration. Additionally we will apply concepts related to the kinematics equations of linear motion.
For conservation of energy we have that work is equal to kinetic energy therefore,


Here,
F = Force
d = Displacement
m = Mass
v= Velocity
At the same time we have the relation of

Therefore the value of the force can be interpreted as the rate of increase in energy per unit of distance, which makes it equivalent to

Applying Newton's Second Law



In 4 seconds final velocity of the object becomes



Then the work done is equal to,




Then the displacement is,




Therefore the distance moved is 16m
Hmm well best i can do is: 7 km/h + 20 km/h = 27 km/h. should be your answer.
Answer: i wasted one of your answer that sad srry
Explanation:
Answer:
1000 Kilograms
Explanation:
Force is equal to mass times acceleration so if the force is 3000 and the acceleration is 3 m/s^2 then all you need to do to find the mass is divide 3000 by 3 which gives you 1000
Answer:
however your doing it now?? ?? lol