Physics Exam 1 chapters 1-4 Verified Questions And Accurate Questions Guaranteed Pass.

velocity - correct answer whenever a net force acts on an object there is a change in the objects opposite to the direction of sliding - correct answer the direction of the force of friction on a sliding crate is the newton - correct answer the unit of mass is the kilogram, and unit of weight is the net force acting on it is 0 - correct answer an object cannot remain at rest unless which of the following holds it could be moving to the left, right or be at rest - correct answer a block of mass 2kg is acted upon two forces 3N left and 4N right, what can you say about the blocks motion moving with a constant nonzero accerleration - correct answer a massive block is being pulled along a horizontal frictionless surface by a constant horizontal force. the block must be cannot have a magnitude equal to 5N - correct answer Two forces, of magnitude 4N and 10N, are applied to an object. The relative direction of the forces is unknown. The net force acting on the object __________. heavier object. - correct answer Two objects of the same size, but unequal weights are dropped from a tall tower. Taking air resistance into consideration, the object to hit the ground first will be the the light woman - correct answer A light woman and a heavy man jump from an airplane at the same time and open their same-size parachutes at the same time. Which person will get to a state of zero acceleration first? 10 times as much - correct answer A 10-kg brick and a 1-kg book are dropped in a vacuum. The force of gravity on the 10-kg brick is twice as much. - correct answer An object is propelled along a straight-line path by a force. If the net force were doubled, the object's acceleration would be halves - correct answer An object is propelled along a straight-line path in space by a force. If the mass of the object somehow becomes twice as much, its acceleration 5N - correct answer An object is pulled northward by a force of 10 N and at the same time another force of 15 N pulls it southward. The magnitude of the resultant force on the object is 10N - correct answer The force of friction on a sliding object is 10 newtons. The applied force needed to maintain a constant velocity is 6N - correct answer A 10-N falling object encounters 4 N of air resistance. The net force on the object is 0N - correct answer An apple weighs 1 N. When held at rest above your head, the net force on the apple is 1N - correct answer An apple at rest weighs 1 N. The net force on the apple when it is in free fall is all of these - correct answer Which has zero acceleration? An object at rest. in mechanical equilibrium. moving at constant velocity. all of these none of these is zero - correct answer Whenever the net force on an object is zero, its acceleration about 1 kg. - correct answer The mass of a pet turtle that weighs 10 N is has zero acceleration. - correct answer An object following a straight-line path at constant speed 400 N. - correct answer A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales. The reading on each scale is equal to its weight. - correct answer A rock is thrown vertically into the air. At the very top of its trajectory the net force on it is 9.8 - correct answer A rock is thrown vertically into the air. At the top of its path, its acceleration in meters per second per second is 5N - correct answer An astronaut on another planet drops a 1-kg rock from rest and finds that it falls a vertical distance of 2.5 meters in one second. On this planet, the rock has a weight of acceleration - correct answer If an object of constant mass experiences a constant net force, it will have a constant force - correct answer The newton is a unit of 0N - correct answer A 10-N falling object encounters 10 N of air resistance. The net force on the object is no - correct answer Since an object weighs less on the surface of the Moon than on Earth's surface, does it have less inertia on the Moon's surface? newtons - correct answer An object's weight may properly be expressed in units of zero - correct answer When a falling object has reached its terminal velocity, its acceleration is mass - correct answer A kilogram is a measure of an object's magnitude and direction. - correct answer A force is a vector quantity because it has both the gravitational attraction force between you and the Earth. - correct answer Your weight is increases - correct answer If an object's mass is decreasing while a constant force is applied to the object, the acceleration 9.8 - correct answer A 1-kg mass at the Earth's surface weighs at the same time as the light block. - correct answer Neglecting friction, a large block of ice and a small block of ice start sliding down an incline together. The heavier block will get to the bottom 19N; remember F=ma - correct answer Calculate the horizontal force that must be applied to produce an acceleration of 1.9g for a 1.0-kg puck on a horizontal 10 times as much force. - correct answer A push on a 1-kg brick accelerates it. Neglecting friction, to equally accelerate a 10-kg brick, one would have to push with 110 km/h - correct answer While you're in a bus that moves at 100 km/h, you walk from the back to the front at 10 km/h. What is your speed relative to the road outside? instantaneous speed - correct answer A speedometer normally measures _______. direction - correct answer The difference between speed and velocity involves acceleration - correct answer Galileo discovered that when air resistance can be neglected, all objects fall with the same 30 m/s - correct answer A ball freely falling at 20 m/s will in the next second have a speed of _______. 1,8 m/s ; speed = distance / time - correct answer Calculate your walking speed when you step 1.0 meter in 0.55 second. 60 m/s ; 30 m/s ; 180m - correct answer What is the instantaneous velocity of a freely falling object 6.0s after it is released from a position of rest? What is its average velocity during this 6.0-s interval? How far will it fall during this time? 20 km/h - correct answer A horse gallops a distance of 10 kilometers in a time of 30 minutes. Its average speed is zero. - correct answer A car maintains a constant velocity of 100 km/hr for 10 seconds. During this interval its acceleration is velocity increases - correct answer While an object near the Earth's surface is in free fall, its zero - correct answer A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected, the force required to keep the puck sliding at constant velocity is 20 m/s. - correct answer An object at rest near the surface of a distant planet starts to fall freely. If the acceleration there is twice that of the Earth, its speed one second later would be greater than the second before - correct answer If an object falling freely were somehow equipped with an odometer to measure the distance it travels, then the amount of distance it travels each succeeding second would be 10 m/s. - correct answer If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by about change by the same amount each second. - correct answer If an object moves with constant acceleration, its velocity must 5 m/s. - correct answer One half second after starting from rest, a freely falling object will have a speed of about about 180 m - correct answer It takes 6 seconds for a stone to fall to the bottom of a mine shaft. How deep is the shaft?