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PhysicsNovice
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Can someone help me with these questions. I am a beginner in the study of physics and would like some help. I have attempted to answer these but would like to know if I am correct and a brief (very brief) explanation. Thanks in advance for your assistance.
An object maintains its state of motion because it has:
a) *mass
b) weight
c) speed
d) acceleration
e) all of these
One object has twice as much mass as another object. The first object also has twice as much:
a) *Inertia
b) Velocity
c) gravitational acceleration
d) volume
e) all of these
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:
a) *zero Newtons
b) equal to the weight of the puck
c) the weight of the puck divided by the mass of the puck
d) the mass of the puck multiplied by 10 meters per second per second
e) none of these
A 10-N falling object encounters 10 N of air resistance. The magnitude of the net force on the object is:
a) *0 N
b) 4 N
c) 6 N
d) 10 N
e) none of these
The force required to maintain an object at a constant speed in free space is equal to:
a) *Zero
b) the mass of the object
c) the weight of the object
d) the force required to stop it
e) none of these
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:
a) before the light block
b) after the light block
c) *the same time as the light block
Suppose a particle is accelerated through space by a 10-N force. Suddenly the particle encounters a second force of 10 N in the opposite direction of the first force. The particle is:
a) *brought to a rapid halt
b) decelerates gradually to a halt
c) continues at the speed it had when it encountered the second force
d) theoretically tends to accelerate toward the speed of light
e) none of these
An object maintains its state of motion because it has:
a) *mass
b) weight
c) speed
d) acceleration
e) all of these
One object has twice as much mass as another object. The first object also has twice as much:
a) *Inertia
b) Velocity
c) gravitational acceleration
d) volume
e) all of these
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:
a) *zero Newtons
b) equal to the weight of the puck
c) the weight of the puck divided by the mass of the puck
d) the mass of the puck multiplied by 10 meters per second per second
e) none of these
A 10-N falling object encounters 10 N of air resistance. The magnitude of the net force on the object is:
a) *0 N
b) 4 N
c) 6 N
d) 10 N
e) none of these
The force required to maintain an object at a constant speed in free space is equal to:
a) *Zero
b) the mass of the object
c) the weight of the object
d) the force required to stop it
e) none of these
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:
a) before the light block
b) after the light block
c) *the same time as the light block
Suppose a particle is accelerated through space by a 10-N force. Suddenly the particle encounters a second force of 10 N in the opposite direction of the first force. The particle is:
a) *brought to a rapid halt
b) decelerates gradually to a halt
c) continues at the speed it had when it encountered the second force
d) theoretically tends to accelerate toward the speed of light
e) none of these