Conceptual Physics Ch 4 Test Questions with Answers
1) Whenever the net force on an object is zero, its acceleration - Answer-B) is zero.
/.2) If an apple experiences a constant net force, it will have a constant - Answer-C)
acceleration.
/.3) If you double the net force on an object, you'll double its - Answer-B) speed.
/.4) If the net force on a cart is tripled, the cart's acceleration - Answer-C) is three times
as much.
/.5) A mobile phone is pulled northward by a force of 10 N and at the same time pulled
southward by another force of 15 N. The resultant force on the phone is - Answer-B) 5
N.
/.6) The force of friction on a sliding object is 10 N. The applied force needed to
maintain a constant velocity is - Answer-C) 10 N.
/.7) A 10-N falling object encounters 4 N of air resistance. The net force on the object is
- Answer-C) 6 N.
/.8) A 10-N falling object encounters 10 N of air resistance. The net force on the object
is - Answer-A) 0 N.
/.9) A 300-kg bear grasping a vertical tree slides down at constant velocity. The friction
force between the tree and the bear is - Answer-C) 3000 N.
/.10) The newton is a unit of - Answer-A) force.
/.11) An object's weight is properly expressed in units of - Answer-C) newtons.
/.12) Which has the greater mass? - Answer-B) an automobile battery
/.13) A 1-kg mass at the Earth's surface weighs - Answer-C) 10 N.
/.14) A kilogram is a measure of an object's - Answer-B) mass.
/.15) The mass of a lamb that weights 110 N is about - Answer-B) 11 kg.
/.16) The mass of a pet turtle that weighs 10 N is about - Answer-A) 1 kg.
, /.17) A bag of groceries that has a mass of 10 kilograms weighs about - Answer-C) 100
N.
/.18) Compared to the mass of an apple on Earth, the mass of the apple on the Moon is
- Answer-B) the same.
/.19) Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much
- Answer-D) all of the above
/.20) Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same -
Answer-E) none of the above
/.21) Your weight as measured on your bathroom scale is - Answer-B) the force due to
gravity on you.
/.22) An object with twice as much mass as another object has twice as much - Answer-
A) inertia.
/.23) Strange as it may seem, it is just as difficult to accelerate a car on a level surface
on the Moon as it is here on Earth because - Answer-A) the mass of the car is
independent of gravity.
/.24) In which case would you have the largest mass of gold? If your chunk of gold
weighed 1 N on the - Answer-A) Moon.
/.25) At equilibrium on a bathroom weighting scale, the downward pull of gravity on you
is balanced by - Answer-B) an upward support force.
/.26) When you stand at rest with your left foot on one bathroom scale and your right
foot on a similar scale, each of the scales will - Answer-C) show readings that when
added equal your weight.
/.27) A heavy ball hangs by a string, with a second string attached to its bottom (Figure
4.8 in your book). A quick pull on the bottom string breaks the - Answer-B) bottom
string.
/.28) A heavy ball hangs by a string, with a second string attached to its bottom. A slow
pull on the bottom string breaks the - Answer-A) top string.
/.29) When the bottom string is pulled slowly in the heavy-ball-and-strings
demonstration (Figure 4.8 in your book), tension - Answer-A) in the top string is due to
your pull plus the weight of the ball.
/.30) A rock weighs 30 N on Earth and another rock weighs 30 N on the Moon. Which
rock has the greater mass? - Answer-B) the one on the Moon
1) Whenever the net force on an object is zero, its acceleration - Answer-B) is zero.
/.2) If an apple experiences a constant net force, it will have a constant - Answer-C)
acceleration.
/.3) If you double the net force on an object, you'll double its - Answer-B) speed.
/.4) If the net force on a cart is tripled, the cart's acceleration - Answer-C) is three times
as much.
/.5) A mobile phone is pulled northward by a force of 10 N and at the same time pulled
southward by another force of 15 N. The resultant force on the phone is - Answer-B) 5
N.
/.6) The force of friction on a sliding object is 10 N. The applied force needed to
maintain a constant velocity is - Answer-C) 10 N.
/.7) A 10-N falling object encounters 4 N of air resistance. The net force on the object is
- Answer-C) 6 N.
/.8) A 10-N falling object encounters 10 N of air resistance. The net force on the object
is - Answer-A) 0 N.
/.9) A 300-kg bear grasping a vertical tree slides down at constant velocity. The friction
force between the tree and the bear is - Answer-C) 3000 N.
/.10) The newton is a unit of - Answer-A) force.
/.11) An object's weight is properly expressed in units of - Answer-C) newtons.
/.12) Which has the greater mass? - Answer-B) an automobile battery
/.13) A 1-kg mass at the Earth's surface weighs - Answer-C) 10 N.
/.14) A kilogram is a measure of an object's - Answer-B) mass.
/.15) The mass of a lamb that weights 110 N is about - Answer-B) 11 kg.
/.16) The mass of a pet turtle that weighs 10 N is about - Answer-A) 1 kg.
, /.17) A bag of groceries that has a mass of 10 kilograms weighs about - Answer-C) 100
N.
/.18) Compared to the mass of an apple on Earth, the mass of the apple on the Moon is
- Answer-B) the same.
/.19) Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much
- Answer-D) all of the above
/.20) Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same -
Answer-E) none of the above
/.21) Your weight as measured on your bathroom scale is - Answer-B) the force due to
gravity on you.
/.22) An object with twice as much mass as another object has twice as much - Answer-
A) inertia.
/.23) Strange as it may seem, it is just as difficult to accelerate a car on a level surface
on the Moon as it is here on Earth because - Answer-A) the mass of the car is
independent of gravity.
/.24) In which case would you have the largest mass of gold? If your chunk of gold
weighed 1 N on the - Answer-A) Moon.
/.25) At equilibrium on a bathroom weighting scale, the downward pull of gravity on you
is balanced by - Answer-B) an upward support force.
/.26) When you stand at rest with your left foot on one bathroom scale and your right
foot on a similar scale, each of the scales will - Answer-C) show readings that when
added equal your weight.
/.27) A heavy ball hangs by a string, with a second string attached to its bottom (Figure
4.8 in your book). A quick pull on the bottom string breaks the - Answer-B) bottom
string.
/.28) A heavy ball hangs by a string, with a second string attached to its bottom. A slow
pull on the bottom string breaks the - Answer-A) top string.
/.29) When the bottom string is pulled slowly in the heavy-ball-and-strings
demonstration (Figure 4.8 in your book), tension - Answer-A) in the top string is due to
your pull plus the weight of the ball.
/.30) A rock weighs 30 N on Earth and another rock weighs 30 N on the Moon. Which
rock has the greater mass? - Answer-B) the one on the Moon
