True or False Questions In uniform circular motion, the centripetal acceleration

Question

True or False Questions In uniform circular motion, the centripetal acceleration is created by changes in the magnitude and direction of the tangential velocity vector. T or F . The units for angular acceleration are (meter-radians)/s2 T orF Newton's 3rd Law is based upon the conservation of linear momentum.T orF 2 masses that move together (in a massless and frictionless pulley system) where mass 1 moves horizontally and mass 2 moves vertically with the same rope have different magnitude and opposite accelerations. · T or F A roller coaster car at the top of a circular loop does not fall downward because the normal force of the track is greater than the car's weight. · T orF

Explanation / Answer

1) F
Because, magnitude of velocity does not change in uniform circular motion.

2) F
Because, units of angular acceleration: rad/s^2

3) F
Because, According to Newton's third law for every action there is an equal and opposite reaction.

4) F
Because, Both have same magnitude of acceleration.

5) F
Because, Normal force is less than its weight.

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