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WorksheetsÔn tập Kt cuối HKI Vật lí 10
Total questions: 34
Worksheet time: 20mins
Choose the incorrect answer. Safety signs in the laboratory must be followed in order to:
create many profitable products
limit dangerous situations such as: cuts, poisoning,…
avoid losses of property if not following instructions.
prevent fire and explosion.
What does the sign mean?
Dangerous place regarding electricity.
Be careful.
Beware of lightning.
Laser warning.
Which of the following measurements is a direct measurement?
Using a ruler to measure height.
Using a scale to measure weight.
Using a scale and a measuring cup to measure the density of water.
Using a speedometer and a mileage marker to measure the speed of a driver.
Choose the incorrect statement about displacement.
Displacement is a quantity that indicates both distance and direction of the change in position of an object.
Displacement is a vector quantity.
Displacement is a scalar quantity.
The displacement vector connects the initial and final positions of a moving object.
Displacement and distance traveled by an object are equal in magnitude when the object:
moves in a circle.
moves in a straight line and changes direction only once.
moves in a straight line and does not change direction.
moves in a straight line and changes direction twice.
The average speed of motion is determined by which of the following expressions?
v=s/t
v=t/s
v=s.t
v=s/2t
What is the average velocity of a motion determined by?
v=dt
v=dt
v=d.t
v=dt
The graph of displacement-time of a uniformly straight-moving point is a straight line with what form?
parallel to the coordinate axis Ot.
perpendicular to the coordinate axis Od.
diagonal always passing through the origin.
diagonal may not pass through the origin.
The image below describes the displacement-time graph of a car running on a straight road. Calculate the average speed of the car.
60 km/h.
90 km/h.
30 km/h.
45 km/h.
In a uniformly accelerated motion, what characteristics do acceleration a and velocity v have?
a.v > 0
a.v < 0
a.v = 0
a.v = constant
The formula relating displacement, velocity, and acceleration of uniformly accelerated motion is?
v2-v02=2.a.d
v2-v02=a.d
v2-v02=2.d
v02-v2=2.a.d
In free fall motion, the instantaneous velocity at time t is calculated by which formula?
vt= gt
vt= tg
vt=12.g.t2
vt=g.t
In free fall motion, the instantaneous velocity, distance traveled, and acceleration relate to each other by which formula?
vt2=2.g.s
vt=2.g.s
vt2=12.g.s
vt2=2.g.s2
An object is thrown horizontally from a height H above the ground, the time for the object to move until it hits the ground is determined by which formula?
t=2.Hg
t=2.H.g
t=H2.g
t=2.Hg
An object is thrown horizontally with velocity v.
An object is thrown horizontally from a height H above the ground. The time taken for the object to hit the ground is determined by the formula:
t=2.Hg
t=2.H.g
t=H2.g
t=2.Hg
An object is thrown horizontally with velocity v0 from a height H above the ground. The horizontal range of the object is determined by the formula:
L=v02.Hg
L=2.Hg. v0
L=2.Hg
L=2.H.v0g
An object subjected to forces F1, F2, F3... has its resultant force determined by:
F=F1+ F2+F3+…
F=F1- F2+F3-…
F=F1.F2.F3…
F=F1+F2+F3+…
Among the following expressions, the expression that corresponds to Newton's second law is:
a=Fm
a=Fm
a=Fm
a=F.m
Choose the incorrect statement about gravity. Near the Earth, gravity has:
Vertical direction.
Direction from top to bottom.
The point of application is called the center of mass of the object.
Direction from bottom to top.
A boat is moving on a river as shown in the image. Consider a certain period of time, the boat is moving uniformly straight and assume that on the horizontal plane the boat is only subjected to the thrust of the engine and the resistance of the water. Which of the following statements is correct?
The thrust of the engine and the resistance of the water are not equal in magnitude.
The thrust of the engine and the resistance of the water have the same direction and the same sense.
The thrust of the engine and the resistance of the water are equal in magnitude.
The thrust of the engine and the resistance of the water are two opposing forces.
An object will remain at rest or move uniformly straight when
the forces acting on the object are balanced.
the forces acting on the object are in the same direction.
the forces acting on the object are in opposite directions, with different magnitudes.
An object will remain at rest or move in a straight line at constant speed when
the forces acting on the object are balanced.
the forces acting on the object are in the same direction.
the forces acting on the object are in opposite directions with different magnitudes.
the forces acting on the object are perpendicular to each other.
When a bus suddenly accelerates, the passengers
stop immediately.
lean back.
lean forward.
lean to the side.
Which of the following statements is correct?
If there are no forces acting on an object, it cannot move.
An object can still move in a circular motion without any forces acting on it.
Force is the reason for maintaining the motion of an object.
Force is the reason for changing the motion of an object.
A passenger sitting at the back of the bus complains that due to the driver braking suddenly, a bag in front flew towards him and hurt him. Is this statement correct or incorrect? Why?
Correct because according to inertia, the bag flew backward.
Correct because the bag flew forward.
Incorrect because according to inertia, the bag flew forward.
Incorrect because the forces at this moment completely stopped the bag from moving.
What could happen to a motorcycle rider who is right behind a truck if the truck suddenly stops?
Nothing will happen.
The motorcycle will be thrown backward.
The motorcycle will tip over to the right.
The motorcycle will crash into the truck.
When riding a motorcycle on a flat road, if we brake, the motorcycle still moves forward. This is due to
the weight of the motorcycle.
the small friction force.
the inertia of the motorcycle.
the reaction force of the road.
When riding a motorcycle on a horizontal road, if we brake, the motorcycle still moves. This is due to
the weight of the motorcycle.
small friction force.
the inertia of the motorcycle.
the reaction force of the road.
The quantity that characterizes the level of inertia of an object is
weight.
mass.
velocity.
force.
Identify the incorrect conclusion. Force is the cause of
the direction of motion of the object changing.
the shape of the object changing.
the magnitude of the object's velocity changing.
the object moving.
Newton's Second Law states that
force is the cause of the object's acceleration.
the relationship between mass and velocity of the object.
the relationship between velocity, acceleration, and time.
force is the cause of motion.
According to Newton's Second Law,
mass is inversely proportional to the object's acceleration.
mass is directly proportional to the applied force.
the object's acceleration is a constant for each object.
the magnitude of the object's acceleration is directly proportional to the force applied to the object.
Which of the following statements is incorrect?
An object moves in a straight line with increasing speed when the force acting on it increases.
The greater the force acting on an object, the greater the magnitude of the object's acceleration.
Under the action of the same force, an object with greater mass has a smaller magnitude of acceleration.
The acceleration vector of an object is always in the same direction as the force causing that acceleration.
