Which of the following quantities is a vector in dynamics? a) Mass b) Temperature c) Acceleration d) Volume According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its; a) Mass b) Velocity c) Momentum d) Density A car traveling at a constant velocity around a circular track experiences what type of acceleration? a) Tangential acceleration b) Centripetal acceleration c) Gravitational acceleration d) Rotational acceleration When a rocket propels itself forward, the expelled gas exerts a force on the rocket that is equal in magnitude but opposite in direction This is an example of: a) Newton's First Law b) Newton's Second Law 0) Newton's Third Law d) Kepler's Law The weight of an object is equal to: a) The mass of the object multiplied by its acceleration b) The mass of the object divided by its acceleration c) The mass of the object multiplied by the acceleration due to gravity d) The mass of the object divided by the acceleration due to gravity A ball is thrown vertically upwards. At the highest point of its trajectory, its velocity is: 3) Maximum b) Zero 0) Minimum d) Constant What is the centripetal forcethat keeps a satellite in Circular motion around the Earth called? a) GraVItational force b) Frictional force c) Tension force d) Centripetal force Which of the following is a scalar quantity? a) Velocity b) Acceleration c) Distance d) Displacement A force of 20 N is applied to an object of mass 5 kg. What is the resulting acceleration? a) 25 mi's2 b) 2 m/s2 0) 100 milsz d) 4 m/s2 A 1.5-kg cart is being pulled with a force of 7.3 N at an angle of 25\" above the horizontal. If a kinetic friction force of 3.2 N acts against the motion, calculate the cart's acceleration along the horizontal surface. a) 5.0 mils: b) 2.3 mii's2