WorksheetsUnit 10: Forces
Total questions: 25
Worksheet time: 13mins
Choose the properties of matter that contribute to an object's momentum (choose all that apply).
Mass
Density
Volume
Velocity
Mass is an intrinsic property of matter that is the measure if...
The space of an object takes up.
The force of gravity acting on an object.
The amount of matter in an object.
The amount of momentum an object has.
Weight is an extrinsic property of matter that is the measure if...
The space of an object takes up.
The force of gravity acting on an object.
The amount of matter in an object.
The amount of momentum an object has.
Inertia is described as an object's tendency to resist a change in its (a) .
The more (a) an object has, the more inertia it has.
Static friction is the frictional force that prevents an object from moving and is caused by...
The microscopic roughness of the two surfaces in contact.
The attraction between the atoms on the two surfaces that are in contact.
The roundness of the object (its ability to roll).
The molecules of air colliding with the object.
Astronauts orbiting Earth appear to be weightless because...
There is no force of gravity acting on them.
They are in free fall, in a curved path around Earth.
There is a smaller force of gravity acting on them.
The Earth and Moon pull on them equally causing the gravitational forces to cancel out.
The equation for calculating an object's momentum is _________.
p=m/V, where m represents mass & V represents volume
p=mg, where m represents mass & g represents the gravitational constant
p=ma, where m represents mass & a represents acceleration
p=mv, where m represents mass & v represents velocity
What is the momentum of a 0.10 kg mass moving with a speed of 20 m/s?
2.0 kg*m/s
2 kg*m/s
0.1 kg*m/s
10 kg*m/s
The amount of net force required to keep a 6 kg object moving rightward with a velocity of 4m/s is.....
0N
24N
6N
12N
Billie has a mass of 35 kg on Earth. What is Billie's mass on the moon where the force of gravity is approximately 1/6th that of Earth's?
6 kg
216 kg
36 kg
1/6 kg
The amount of net force required to keep an 8 kg object moving upward with an acceleration of 2 s2m
8N
4N
1/4N
16N
A 5N net force is applied to a 10 kg object moving downwards what is the objects acceleration?
0 m/s2
2 m/s2
15 m/s2
0.5 m/s2
According to Newton's third law, every force is accompanied by an equal and opposite reaction force. The reason that these forces do not cancel each other is…
The action force acts for a longer time period.
One of the two forces is greater than the other.
The two forces act upon different objects; only forces on the same object can balance each other.
Nonsense! They do cancel each other. Objects accelerate because of the presence of a third force.
As you sit in your chair and study your physics (presuming that you do), the force of gravity acts downward upon your body. The reaction force to the force of the Earth pulling you downward is…
The force of the chair pushes you upward.
The force of air molecules pushing you upwards.
The force of your body pulling the Earth upwards.
Nonsense! Gravity is a noncontact force and there is no such reaction force.
A golf pro places a ball at rest on the tee, lines up his shot, draws back his club, and makes his swing. During the contact of the golf club with the golf ball, the force of the club on the ball is ____________ the force of the ball on the club and the acceleration of the club is ____________ than the acceleration of the ball.
equal to, less than
greater than, equal to
equal to, equal to
greater than, less than
A force is descried as a push or pull.
True
False
Unbalanced forces cause objects to accelerate.
True
False
If the forces acting on an object are balanced, there is no net force acting on that object.
True
False
It would take an unbalanced force to keep an object in motion.
True
False
An object weighs less on the moon than it does on Earth.
True
False
If an object is moving with a constant speed in a circle, then the forces acting upon the object are balanced.
True
False
A non-contact force results from the physical contact between two objects.
True
False
It is the natural tendency of all objects to eventually come to a rest position.
True
False
The mass of an object on the moon is less than its mass on the Earth.
True
False
