AP Physics C: Mechanics Momentum, Impulse and Collisions — practice questions
66 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP Physics C: Mechanics Momentum, Impulse and Collisions in the app →Kinematics only describes how objects move. The study of the forces that cause motion is:A force is a push or pull that has both magnitude and direction, so it is a:A diagram showing a body as a single point with only the external forces acting on it is a:A stretched spring pulling back to its relaxed shape exerts a:A hockey puck glides far on an air table because friction is nearly gone. This illustrates Newton's:The property of a body to remain at rest or keep moving at constant velocity is called:Inertia is measured by an object's:A kilogram of cotton balls and a kilogram of gold have:Newton's second law states acceleration is directly proportional to net external force and inversely proportioThe newton is the force needed to accelerate a 1 kg system at:The weight of a 1.0 kg object on Earth is about:On the Moon, where g is 1.625 m/s squared, a 1.0 kg mass weighs about:A net force of 51 N pushes a 24 kg lawn mower. Its acceleration is about:Whenever one body exerts a force on a second, the first experiences an equal and opposite force. This is NewtoA swimmer pushes on the pool wall and accelerates away. The two equal and opposite forces do not cancel becausA rocket moves forward because expelled gas exerts a forward reaction force called:The support force perpendicular to a surface of contact is called the:On a frictionless incline at angle theta, the acceleration of any mass is:A 5.00 kg mass hangs at rest from a rope. The tension in the rope is:A 70 kg tightrope walker makes a wire sag by 5 degrees. The tension in the wire is about:Forces that appear only because an observer is in an accelerating frame of reference are:Earth's rotation is slow enough that Earth is nearly a:The study of motion without considering its causes is:To describe the position of a passenger walking inside an airplane, the most convenient reference frame is:Displacement is defined as the change in an object's:The SI unit for displacement is the:A professor moves from x = 1.5 m to x = 3.5 m. Her displacement is:A professor paces 150 m during a lecture but ends 2.0 m right of her start. Her distance traveled is:A cyclist rides 3 km west then 2 km east. The magnitude of the displacement is:A quantity with both magnitude and direction, such as a velocity of 90 km/h east, is a:A 20 degree temperature, a 1.8 m height and a 2.0 m distance are all:Which quantity is never represented by an arrow?Once you assign a positive direction in a problem, you:The SI unit for time is the:A lecture runs from 11:00 to 11:50 AM. The elapsed time is:Average velocity is displacement divided by:An airplane passenger moves -4 m in 5 seconds. His average velocity is:A car's speedometer shows the magnitude of its:You drive to a store and back in half an hour, 6 km total. Your average speed is 12 km/h and your average veloAverage acceleration is the rate at which which quantity changes?A car turning a corner at constant speed is:When an object slows down, its acceleration opposite to its motion is called:A racehorse accelerates from rest to 15.0 m/s west in 1.80 s. Its average acceleration magnitude is:The train slows from 30.0 km/h to a stop in 8.00 s. Its acceleration is about:Linear momentum is the product of a system's mass and its:The SI unit for momentum is:A 110 kg football player runs at 8.00 m/s. His momentum is:A 0.410 kg football thrown at 25.0 m/s has momentum of about:Although the ball is faster, the player has far more momentum because of his much greater:Momentum form of Newton's second law is useful for systems whose mass changes, such as:Venus Williams's 2007 serve reached a ball speed of:The average force on the 0.057 kg ball in contact with the racquet for 5.0 ms was about:The quantity average net force multiplied by the time it acts is called:Airbags reduce injury by making the stopping force act over a:Deaths in car racing fell sharply when rigid frames were replaced by parts that:Rolling on the ground after a jump protects your bones by extending the:On a force-versus-time graph, the area under the curve equals the:When a football player hits a goalpost, momentum is still conserved because the Earth also:An isolated system is one for which the net external force is:Squids propel themselves like jellyfish and typically move at:A collision that conserves internal kinetic energy is called:Truly elastic collisions are achieved only with:A 0.500 kg object at 4.00 m/s hits a 3.50 kg object at rest elastically. The small object:A collision in which the objects stick together is called:A 70.0 kg goalie at rest catches a 0.150 kg puck moving at 35.0 m/s. His recoil velocity is:Why does a heavier tennis racquet have the advantage? In a collision what is conserved is: