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Title: How do I solve these physics questions? Post by: dashylia on Jun 30, 2012 A 1500 kg car experiences a net force of 1100 N force. It accelerates for 10.0 sec from rest.
What is its final velocity after acceleration? How far does it travel during its acceleration? Can you explain how to solve these problems? Title: How do I solve these physics questions? Post by: julie7 on Jun 30, 2012 Neglecting friction, we will start where most physics problems start: Force = mass * acceleration
First find the acceleration F = ma 1100=1500a a= 0.733 m/s^2 Now we will find the distance traveled vf = vi + at where vf is the final velocity, vi is the initial velocity, t is time and a is acceleration vf = 0 + (0.0733)(10.0) vf= 7.33 m/s Now we will find the distance traveled vf^2 = vi^2 + 2ad (7.33)^2 = 0^2 + 2(0.733)d d=36.7 m Title: How do I solve these physics questions? Post by: o2blea on Jun 30, 2012 given:
F=1100N (net force) W= 1500 kg (weight) T=10s (time) Vi=0m/s (velocity from rest) find Vf (final velocity) and D (the distance traveled) to start off, we must get the mass of the car, from the formula w=mg (weight is equal to mass x gravity), m = 153.06 N. Then, using the formula F=mA (where A is the acceleration) to get the acceleration, which is A= 7.19 m/s^2. Then, to calculate the Vf, from the formula A=(Vf-Vi) / T , deriving, Vf=AT+Vi, Vf = 71.9 m/s. Then for the distance traveled, D=(Vf-Vi) x T, D = 719m. Summary of answers: Vf=71.9m/s D=719m. not sure though, lol. |