Force and Motion Dynamics

The acceleration of the system is independent of tension.

The tension in the string is an external force on the system.

The acceleration of the system depends only on the mass of one block.

The acceleration of the system is zero because the table is frictionless.

The acceleration is halved.

The acceleration remains the same.

The acceleration is doubled.

The acceleration is quadrupled.

$\vec{a} = \frac{F_1 + F_2}{m}$

$\vec{a} = \frac{F_1cos(\theta_1) + F_2cos(\theta_2)}{m}$

$\vec{a} = \frac{F_1sin(\theta_1) + F_2sin(\theta_2)}{m}$

$\vec{a} = \frac{\vec{F}_{1} + \vec{F}_{2}}{m}$

The net force must be zero.

The net force must be non-zero.

The net force must be constant.

The net force must be decreasing.

2 m/s²

5 m/s²

8 m/s²

80 m/s²

The forces are unbalanced, resulting in constant acceleration.

The forces are balanced, resulting in constant velocity.

The forces are unbalanced, resulting in constant velocity.

The forces are balanced, resulting in zero velocity.

$a = \frac{Fcos(\theta) - \mu_k mg}{m}$

$a = \frac{Fsin(\theta) - \mu_k mg}{m}$

$a = \frac{F - \mu_k mg}{m}$

$a = \frac{Fcos(\theta) + \mu_k mg}{m}$

Internal forces always cause the center of mass to accelerate.

Internal forces can change the velocity of the center of mass.

Internal forces have no effect on the motion of the center of mass.

Internal forces only affect the motion if the objects are accelerating.

2.0 m/s²

3.0 m/s²

3.46 m/s²

4.0 m/s²

5 m/s

10 m/s

15 m/s

30 m/s