car starts from rest and acquires a velocity of 54 kilometre per hour into second find the acceleration is the mass of the car is thousand kilogram what is the force acting on it???
car starts from rest and acquires a velocity of 54 kilometre per hour into second find the acceleration is the mass of the car is thousand kilogram what is the force acting on it???
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Answer:
HI there !!!
Here ,
As the car is starting from rest ,
Initial velocity = u = 0 m/s
Final velocity = v = 54 km/hr
To convert km/hr to m/s , we multiply it by 5/18
Final velocity = v = 54 km/hr = 54 x 5/18
= 15 m/s
Time = t = 2 sec
a = acceleration
Equation of motion :
v = u + at
15 = 0 + 2a
a = 15/2 = 7.5 m/s²
s = distance traveled
Equation of motion :
s = ut + 1/2 at²
= 0 + 1/2 × 7.5 × 2²
= 15 metres
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