1. The velocity vector is always directed tangent to the path. True I False 2. T

Question

1. The velocity vector is always directed tangent to the path. True I False 2. The horizontal component of velocity remains constant during a free-flight motion assuming no wind True False 3. If two rotating bodies contact one another, then the points in contact move along the same circular paths making the velocity and normal components of acceleration the same. True False 4. The magnitude of acceleration under curvilinear motion is defined by this equation: a=(at 2 + a? )1/2 True I False 5. The time rate of change in the angular position is called the angular velocity (a alpha) True False

Explanation / Answer

1. True

Velocity Vector aways follows a tangent path. In circular motion the speed is constant but direction is changing at every point which results in change in Velocity component.

2.True

Neglecting the air resistance horizontal component the velocity along horizontal direction remains constant.

3 True

4 True

velocity is given by the root of the sum of square of tangential components and normal components.

5 True i:e

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