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Answer:
Acceleration => 2m/s^2
Force => 14000N
Explanation:
Given :
Initial velocity,u = 0m/s
Final velocity,v = 400m/s
Time taken,t = 20s
To Find :
Acceleration,a = ?
Force acting on it if it’s mass is 7 tonne
Solution :
According to second law of equation
So,
Therefore,acceleration is equal to 2m/s^2.
We know,
[1 tonne = 1000kg so, 7 tonne = 7 × 1000 = 7000kg]
So,
Force = 7000kg × 2m/s
⇒ 14000N
Therefore,force acting on the object is equal to 14000N.