Free Printable LONG EXAM

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LONG EXAM

Total questions: 50

Worksheet time: 1hrs 3mins

Name

Class

Date

A baseball was pitched at a velocity of 4m/s. What will be the ball's horizontal velocity when it reach the maximum height?

0 m/s

2m/s

4m/s

6m/s

Without air resistance, What will be the time for a vertically tossed ball to return to where it was thrown?

-9.8 m/s for every second in the air.

the same as the time going upward.

less than the time going upward.

more than the time going upward.

Which among them is a factor in affecting the flight of a projectile?

Final Velocity

Initial velocity

Angle of release

Time

In a projectile motion, the magnitude and direction of the horizontal component is always constant. What is the relationship on the magnitude and direction in the vertical component?

Magnitude: Changing, Direction: Constant

Magnitude: Changing, Direction: Changing

Magnitude: Constant, Direction: Constant

Magnitude: Constant, Direction: Changing

A coin is thrown in a projected manner and another coin with the same mass is dropped with the same height as the first coin. Which coin will fall faster? (neglecting air resistance)

The coin projected.

The coin in freefall.

It cannot be determined.

Both will fall at the same time.

A physics book slides off a horizontal tabletop with a speed of 1.10 m/s. It strikes the floor in 0.35 s. Ignoring Air resistance; How far from the base of the table will the book land?

0.39 m

0.50 m

0.60 m

Insufficient data.

How can you describe the motion on the horizontal axis if you ignore air resistance?

acceleration due to gravity

constant velocity

varying acceleration

motionless

As a ball rolls across a table it has a constant horizontal velocity. When the ball rolls off the table the horizontal velocity...

Stays the same

Accelerates at -9.8 m/s²

Accelerates at an unknown value

Becomes zero

A ball rolls off of a horizontal table and falls to the ground. The instant the ball leaves the table its vertical velocity is...

-9.8m/s

Unknown

0m/s

9.8m/s

10.

A ball is rolling across a table with a horizontal velocity of 2m/s. It rolls off a table that's 2m tall. How far does the ball land away from the table (Δx)?

1.26 m Away

4.13 m Away

0.98 m Away

3.45 m Away

11.

What is the vertical acceleration of a projectile?

0 m/s²

9.8 m/s² down

4.9 m/s²down

12 m/s down

12.

An object is projected horizontally from a cliff. The time it takes to hit the ground is

more than if it was just dropped

less than if it was just dropped

the same amount of time than if it was just dropped

impossible to determine

13.

When a ball is projected horizontally, what is its initial vertical velocity?

10 m/s

0 m/s

not enough information given

the velocity given in the problem

14.

What is the horizontal acceleration of a projectile?

0 m/s²

-9.8 m/s²

-15 m/s²

- 20 m/s

15.

What can you say about motion in the x and y direction?

x is dependent on y

y is dependent on x

They are dependent on each other.

They are independent of each other.

16.

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

14.3 m

30.55 m

65 m

43.55 m

17.

A bullet is fired horizontally at a height of 1.3 meters at a velocity of 950 m/s. Assume no air resistance. How long until the bullet reaches the ground?

0.52 s

0.27 s

0.13 s

0.36 s

18.

A projectile is launched from a height with an initial velocity v_0,x. The v_f,xrepresents the final horizontal velocity before impact.

v_0,x = v_f,x

v_0,x < v_f,x

v_0,x > v_f,x

unable to determine

19.

Projectile A is fired with a velocity of 20 m/s while projectile B is fired with a velocity of 40 m/s from the same height. Which statement best describes the range of projectile B as compared to projectile A?

Projectile B goes half as far as projectile A,

Projectile B goes twice as far as projectile A.

Projectile B goes the same range as projectile A.

Can not be compared.

20.

What is true about the vertical velocity of a projectile launched horizontally?

It is initially at its maximum value.

It increases due to gravity as it falls.

It remains constant throughout its trajectory.

It decreases as it falls due to gravity.

21.

What is the velocity of an object launched straight up at its highest point?

zero

equal to its v_x

½ its maximum value

equal to gravity

22.

Which represents the acceleration of the ball?

23.

Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?

144

24.

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s².

2.4 m/s

3.6 m/s

3.9 m/s

4.2 m/s

25.

Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s

4.1 kg

3.6 kg

2.5 kg

1.8 kg

26.

What's the centripetal force of a .2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?

2.05 N

2.57 N

2.90 N

3.13 N

27.

What's the centripetal acceleration of a .2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?

8.23 m/s²

10.54 m/s²

12.86 m/s²

17.39 m/s²

28.

A car is making a turn at speed v. The radius of the turn is r and the centripetal force on the car is F. If the car rounds the same curve at speed 2v, the required centripetal force is...

$\frac{1}{2}F$

$F$

$2F$

$4F$

29.

A body of mass m moves in a horizontal circle of radius r at constant speed v for one complete revolution. Which of the following statements is incorrect?

The angular velocity of body is directed perpendicular to the plane of circular motion

The work done by the centripetal force is $2\pi mv^2$

The change in linear momentum of the body is zero

The total energy of the body is constant.

30.

Which of the following statements is not true for a stone attached to a string and swung in a uniform vertical circular motion?

The magnitude of resultant force acting on the stone changes depending on the position of the stone in the circle.

The tension in the string is lowest when the stone is at the highest point of the circular motion.

The kinetic energy of the stone is constant throughout the entire circular motion.

The resultant acceleration is always directed towards the centre of the circle.

31.

The combined mass of a race car and its driver is 600 kg. Travelling at constant speed, the car completes one lap around a circular track of radius 160 m in a total time of 36 s. What is the magnitude of the centripetal acceleration of the car?

0.17 m s^-2

4.9 m s^-2

100 m s^-2

2900 m s^-2

32.

In a tape cassette, the tape leaves one spool at a constant speed v and at a variable distance r from the centre. Which of the following statements is true?

The angular velocity decreases as radius r decreases.

The angular velocity increases as radius r decreases.

The angular velocity is directly proportional to the speed v.

The angular velocity is directly proportional to the speed v²

33.

A pendulum bob is released from rest in a horizontal position with the string taut. Which of the following statements is correct when the pendulum reaches its vertical position at point P?

The tension attained its least value

The tension depends only on the length of the pendulum

The tension depends on the mass and length of the pendulum bob.

The magnitude of tension equals the weight of the pendulum bob

34.

Centripetal force is an acceleration of an object moving in circular path whose direction is _________________________of the circular path and whose magnitude is equal to the square of the speed divided by the radius.

towards the tangent

towards the centre

towards the minimum point

towards the maximum point

35.

Where is the net force when the rollercoaster is at the top of the loop?

Towards the sky

Towards the Right

Towards the left

Towards the center of the circle

36.

In uniform circular motion, the magnitude of the _______________________of an object is constant but the __________ is continually changing.

speed, acceleration

speed, direction

acceleration, speed

acceleration, velocity

37.

The velocity is always _____ to the line of a circle.

outwards

towards the center

tangent

faster

38.

Which statement is true about an object that is traveling in uniform circular motion?

The speed of the object varies.

The net force on the object is directed toward the center of the circular path.

The direction of the object's velocity is constant.

The net force on the object is directed away from the center of the circular path.

39.

Centripetal acceleration always points

in the direction of the object's motion

in the opposite direction of the object's motion

towards the center of the circle

towards the outside of the circle

40.

The _______________________ supplies the centripetal force requirement for the car to move in a horizontal circle. Without it, the car would turn its wheels but would not move in a circle (as is the case on an icy surface).

friction force

centrifugal force

normal force

applied force

41.

Two particles, X and Y, are attached to the surface of a horizontally mounted turntable.

The turntable rotates uniformly about a vertical axis. The magnitude of the linear velocity of X is v and the magnitude of its acceleration is a. Which of the following correctly compares the magnitude of the velocity of Y and the magnitude of the acceleration of Y with v and a respectively?

Y velocity = v

Y acceleration < a

Y velocity > v

Y acceleration < a

Y velocity = v

Y acceleration > a

Y velocity > v

Y acceleration > a

42.

You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?

Friction

Centripetal Force

Gravity

Inertia

43.

Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.

10 N

20 N

30 N

40 N

44.

Why do objects experience centripetal acceleration even though they can have a constant speed?

Because they are speeding up as they move in a circle

Because they are constantly changing direction and hence, velocity changes, and that net change is directed inward.

Because they are constantly changing both speed and direction

Because when you have 100 people pedaling, you can speed up more easily.

45.

The linear velocity is always _____ to the line of a circle.

outwards

towards the center

tangent

faster

46.

What is the difference between rotation and revolution?

Rotation is around another object while revolution is around its own axis.

Rotation is on its own axis while revolution is around another object.

They are the same

Rotation is faster

47.

What does RPM stand for?

Speed of a straight line

speed of a circle

Revolutions Per Minute

Rotations Per MInute

48.

Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?

0.25 ms^-2

0.5 ms^-2

1 ms^-2

2 ms^-2

49.

Which of the following terms means "center seeking"?

centrifugal

centrifuge

centripetal

centenarian

50.

Given that the angular velocity of a car is 25 rpm. What is its angular velocity in rad/s?

2.62

0.83

157.1

78.5

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LONG EXAM

Total questions: 50

Worksheet time: 1hrs 3mins

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