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WorksheetsPhysics Semester 1 Review
Total questions: 68
Worksheet time: 49mins
The speedometer in a car does not measure the car’s velocity because velocity is a
vector quantity and has a direction associated with it
vector quantity and does not have a direction associated with it
scalar quantity and has a direction associated with it
scalar quantity and does not have a direction associated with it
Velocity is to speed as displacement is to
acceleration
mass
time
distance
What is the unit of measurement used in physics for speed?
seconds
seconds per meter
meters
meters per second
A car at accelerates from 0 m/s to 25 m/s in 5 seconds. What is the average acceleration of the car?
30 m/s2
50 m/s2
125 m/s2
5 m/s2
Which one of the following quantities is NOT a vector?
10 mi/hr, east
10 mi/hr/sec, west
35 m/s, north
20 m/s
Which one of the following quantities is NOT a speed?
10 mi/hr
10 mi/hr/sec
35 m/s
20 m/s
What is constant velocity?
Moving at a constant speed without changing direction
Moving at a changing speed without changing direction
Moving at a constant speed with changing direction
Moving at a changing speed with changing direction
An object in motion tends to stay in motion and an object at rest tends to stay at rest until acted on by an unbalanced force is which of Newton's laws?
1st
2nd
3rd
4th
The acceleration of an object is dependent upon the net force acting upon the object and the mass of the object is which of Newton's laws?
1st
2nd
3rd
4th
For every action there is an equal and opposite reaction is which of Newton's laws?
1st
2nd
3rd
4th
What is defined a push or pull?
force
net force
an unbalanced force
a balanced force
Forces that cause a change in motion of an object are called
balanced forces
net forces
motion forces
unbalanced forces
Calculate the net force
20
10
0
30
Calculate the net force
25
65
20
15
Collisions where objects BOUNCE apart.
inelastic collisions
elastic collisions
explosions
none of these
Momentum before = Momentum after
according to the Law of Conservation of _______________.
Momentum
Energy
Force
Acceleration
Two Pool Balls collide and then go separate directions.
inelastic collision
explosion
elastic collision
none of these
Collision where objects collide, and stick together.
inelastic collision
explosion
elastic collision
none of these
For every action, there is an equal and opposite reaction.
Newton's 1st Law
Newton's 3rd Law
Newton's 2nd Law
Law of Momentum
Which TWO variables determine the MOMENTUM for an object?
time
density
velocity
mass
A trampoline increases __________________, which in turn decreases _____________________.
force / time
time / force
mass / weight
acceleration / velocity
An insect applies 1.5 N of force to a windshield of a moving car. How much force does the windshield apply to the insect?
15,000 N
0.5 N
1.5 N
Not enough information
Match the following definitions to their terms.
Momentum
The product of mass and velocity
Impulse
The change in momentum
Elastic collision
kinetic energy is conserved, they bounce
Inelastic collision
kinetic energy not conserved, they stick
A penguin trips on some ice and hits the ground with a force of 34 N over .74 seconds. What was the impulse?
45.9 Ns
36.2 Ns
22.9 Ns
25.16 Ns
What is the momentum of a 30 kg penguin sliding at .67 m/s?
44.8 kg⋅m/s
20.1 kg⋅m/s
25 kg⋅m/s
67.4 kg⋅m/s
What is speed?
a measure of how fast something is moving
the distance covered per unit time
always measured in terms in a unit of distance divided by a unit time.
all of these
What is force?
Its energy surrounds us and binds us. You must feel the Force around you; here, between you, me, the tree, the rock, everywhere, yes. Even between the land and the ship.
A push or pull on an object
A particle moves along a straight line. Which of the following statements about its velocity is true?
The velocity is constant.
The velocity is changing but the speed remains constant.
The velocity is changing, causing a change in speed.
The velocity and speed are both zero.
According to Newton's third law of motion, for every action, there is:
No reaction.
An unequal reaction.
A reaction that moves in the same direction.
An equal and opposite reaction.
Which of the following scenarios will result in the greatest change in momentum?
A small force acting for a short time.
A large force acting for a long time.
A small force acting for a long time.
A large force acting for a short time.
What provides the centripetal force that keeps an object in uniform circular motion?
Friction
Tension
Gravity
Centrifugal force
If an object is accelerating, which of the following statements is true about its motion? a) Its velocity is decreasing. b) Its velocity is constant. c) Its velocity is increasing. d) Its velocity is zero.
Its velocity is increasing
Its velocity is decreasing
Its velocity is constant
Its velocity is zero
A ball is rolling across a floor. What force causes it to eventually come to a stop?
Gravity
Air resistance
Friction
Inertia
Two objects of different masses are moving with the same velocity. Which object has a greater momentum?
The object with the smaller mass.
The object with the larger mass.
Both have the same momentum.
Depends on the direction of motion.
What happens to the centripetal force required to maintain an object's circular motion if the speed of the object is doubled?
It is halved
It remains the same
It is quadrupled
It is doubled
According to Newton's second law of motion, the relationship between force (F), mass (m), and acceleration (a) is given by: a) F = m/a b) F = a/m c) F = m × a d) F = m + a
F = m / a
F = m x a
F = a / m
F = m + a
A stationary object of mass 2 kg is struck by an object of mass 4 kg, initially moving at 3 m/s in the opposite direction. After the collision, both objects move together. What is their final velocity? a) 0.75 m/s b) 1.5 m/s c) 2.25 m/s d) 3 m/s
2 m/s
1.5 m/s
2.25 m/s
3 m/s
If an object moves with a constant velocity, what can be said about its acceleration? a) The acceleration is zero. b) The acceleration is increasing. c) The acceleration is decreasing. d) The acceleration is constant.
The acceleration is increasing.
The acceleration is decreasing.
The acceleration is zero.
The acceleration is constant.
A skydiver falls toward the Earth. What force opposes the motion of the skydiver? a) Friction b) Air resistance c) Gravity d) Tension
Friction
Air resistance
Gravity
Tension
Two objects have the same momentum. Object A has a larger mass than object B. How do their velocities compare?
Object A has a smaller velocity than object B.
Object A has a larger velocity than object B.
Object A and object B have the same velocity.
It is impossible to determine without more information.
In uniform circular motion, what is the direction of the acceleration of an object moving in a circle at a constant speed? a) Tangential to the circle b) Radially inward toward the center c) Radially outward from the center d) Parallel to the plane of the circle
Tangential to the circle
Radially inward toward the center
Radially outward from the center
Parallel to the plane of the circle
An object moves with a constant acceleration of 4 m/s². If its initial velocity is 6 m/s, what will be its velocity after 5 seconds? a) 20 m/s b) 26 m/s c) 14 m/s d) 10 m/s
20 m/s
26 m/s
14 m/s
10 m/s
If a force of 20 N acts on an object with a mass of 5 kg, what will be the resulting acceleration? a) 4 m/s² b) 25 m/s² c) 100 m/s² d) 0.25 m/s²
4 m/s²
25 m/s²
100 m/s²
0.25 m/s²
In an elastic collision between two objects, which of the following is conserved?
Kinetic energy
Momentum
Both kinetic energy and momentum
Neither kinetic energy nor momentum
What happens to the centripetal force required to maintain an object's circular motion if the radius of the circle is doubled? a) It is halved. b) It remains the same. c) It is quadrupled. d) It is doubled.
It is halved.
It remains the same.
It is quadrupled.
It is doubled.
Which of Newton's laws explains the behavior of a cannon firing a cannonball?
First Law
Second Law
Third Law
None of these bruh
Which law contains and explains inertia?
First Law
Second Law
Third Law
None of these bruh
Which law explains the direct relationship between force and acceleration?
First Law
Second Law
Third Law
None of these bruh
If a force is applied to an object for twice the time, how does it affect the object's change in momentum?
The change in momentum doubles.
The change in momentum halves.
The change in momentum quadruples.
The change in momentum remains the same.
Two objects of equal mass collide elastically. What can be said about their velocities after the collision?
They both come to a stop.
One object stops while the other continues at the same speed.
Both objects continue at the same speed.
Their velocities depend on their initial speeds.
If the distance between two objects is doubled, how does the gravitational force between them change?
a) It becomes one-fourth
b) It becomes half
c) It remains the same
d) It becomes four times
It becomes one-fourth
It becomes half
It remains the same
It becomes four times
Consider a satellite in circular orbit around Earth. Which of Newton's laws describes the reason why the satellite maintains its orbit without falling back to Earth?
First Law
Second Law
Third Law
None of these bruh
A 1 kg ball initially at rest is struck by a force of 10 N for 0.5 seconds. What is the change in momentum of the ball?
0.5 kg m/s
5 kg m/s
10 kg m/s
20 kg m/s
In uniform circular motion, if the speed of an object is doubled while the radius remains constant, how does it affect the centripetal force required to keep the object in its path?
a) It is halved
b) It remains the same
c) It is doubled
d) It quadruples
It is halved
It remains the same
It is doubled
It is quadrupled
In the pictures below the string holding the object in circular motion has
broken. Which shows the correct path of the ball after the string breaks
Distance is a vector quantity.
True
False
