Homework Help: physics

Posted by maggie on Saturday, November 21, 2009 at 12:32pm.

A 4.0 kg particle is moving along the x axis to the left with a velocity of v= -12.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the particle at t=4.0 s. Can I just substitute 4 in this formula 3t^2 - 12t to solve

physics - bobpursley, Saturday, November 21, 2009 at 12:39pm
you have to calculate acceleration.

a= force/mass= (3t^2-12t)/4
v(4)=-12+a*t
now put t=4 into the equation

Answer this Question

Related Questions

physics - . A 2.0 kg particle is moving along the x axis to the left with a ...
physics - A 2.0 kg particle is moving along the x axis to the left with a ...
Physics - A 2.0 kg particle is moving along the x axis to the left with a ...
physics - A 1.6 kg particle moving along the x-axis experiences the force shown ...
physics emergerncyy! - A particle of mass m1 = 2.5 kg moving along the x axis ...
physics - A particles has a mass of 0.5 kg and a velocity of 734 m/s along the x...
Physics-Help please... - The graph give the acceleration a versus time t for a ...
Physics - Figure 2-41 gives the acceleration a versus time t for a particle ...
Calculous - A particle moves along the c-axis so that at time t its position is ...
physics - A 5.00 kg particle moving along the x-axis at an initial velocity of 4...

For Further Reading

First Name:
School Subject:
Answer: