In: Physics

Part A

The kinematic equation x = x_{0} + V_{0}t + 1/2at^{2} can be used:

- Only with constant velocities.
- Only with constant forces.
- With variable accelerations.
- All of the preceding

Part A Answer

The equation includes acceleration, so option A is wrong. Option C is wrong because the equation only includes constant acceleration, ‘a’. Since choices A and C are wrong, choice D is also wrong. Option B is correct, though, because F = ma and the equation includes ‘a’. As long as the force is constant, acceleration will also be constant. Therefore:

Only with constant forces.

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