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Any change in position over time is an example of? A.) force B.) velocity C.) motion C.) motion D.) friction L F The newton is the SI unit of? A.) A.)force force B.) motion C.) friction D.) velocity L F The speed of an object in a particular direction is? A.) motion B.) velocity B.) velocity C.) force D.) friction L F A force that always acts to oppose motion is? A.) A.)friction friction B.) unbalanced C.) force D.) balanced L F When a batter in a baseball game hits the ball, The ball changed direction and moves because a _____________ force was applied to the ball. A.) force B.) friction C.) C.)unbalanced unbalanced D.) balanced L F When forces are ________ the object of the forces does not move. A.) unbalanced B.) B.)balanced balanced C.) force D.) friction L F Why does a ball thrown level to the ground move downward? A.) There is no force on the ball. B.) A force pulls ball in the direction it is thrown. C.) Forces pull on the ball in both directions. D.) D.)Gravity Gravitypulls pullsball balltoward towardthe theground ground. L F Which type of cart will accelerate the least? A.) An empty cart pushed with a hard force. B.)AAfull fullcart cartpushed pushedwith with aalight light force force. B.) C.) An empty cart pushed with a light force. D.) A full cart pushed with a hard force. L F Why does a block sitting on a table not move? A.) frictional force B.) surface friction C.) force applied C.)nono force applied D.) kinetic friction L F Which of the following is a balanced force? A.) A baby pushed in a stroller. B.) A child running down a path. C.) A car traveling on a highway. D.) D.)AAporch porchswing swinghanging hangingfrom fromthe theporch porchroof. roof. L F What two things does speed depend on? A.) velocity and friction B.) velocity and time C.) distance and friction D.) D.)distance distanceand andtime time L F What is an object that appears to stay in place that helps detect motion in another object? A.) newton B.)reference referencepoint point B.) C.) a black hole D.) a lubricant L F Which of the following most closely illustrates motion by relating it to a reference point? A.) the velocity change of a train relative to time C.) the distance a race car traveled relative to the time of travel B.) the speed of a bicycle relative to the direction of travel D.) D.)thethehands handsofofaaclock clockrelative relativetotothe the numbers numberson onaaclock clock L F In which of the following activities is friction harmful? A.) brakes stopping a car B.) a person walking C.) car carengine engineparts partswearing wearingout out C.) D.) an eraser erasing L F An unbalanced force can cause an object’s motion to change by A.) A.)changing changingdirection directionororspeed, speed,starting starting ororstopping stoppingmotion motion C.) changing direction or speed; stopping but not starting motion B.) changing direction or speed; starting but not stopping motion D.) changing direction or speed only L F Congratulations! Thank-you for playing…
