The position vector of a particle of mass 0.05 kg is r (t) = 3 cos (4. t)i + 3 sin (4.t)j +10 t k What is the vector expression for the velocity of the particle at time t in m/s? v (t) = ? What is the vector expression for the acceleration of the particle at time t in m/s^2? a(t) = ? Deduce the magnitude of the force acting on the particle |F| = What is the direction of the acceleration compared with the velocity of the particle?

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Q: velocity

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Projectile Motion