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UPS 1 (Chapter 1-4) exercise

Total questions: 48

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

Physical quantities can be defined as:

a)

Quantity that can be measured

b)

Quantity that can be defined

c)

Quantity that cannot be derived

d)

Quantity that have direction

2.

Those are from basic quantity except

a)

Time

b)

Velocity

c)

Electric Current

d)

Luminosity

3.

 2A‾+2B‾\overline{2A}+\overline{2B}  

a)
b)
c)
d)
4.

The dimensional formula for kinetic energy is:

a)

M2 L2 T2

b)

M L2 T-2

c)

M2 L T-2

d)

M L2 T

5.
If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?
a)
20m
b)
40m
c)
0m
d)
-20m
6.

Hooke’s law states that the force, F, in a spring extended by a length x is given by F = −kx. From Newton’s second law F = ma, where m is the mass and a is the acceleration, calculate the dimension of the spring constant k.

a)

M L2 T2

b)

M T2

c)

M L-2 T-2

d)

M T-2

7.

Choose the correct answer for this equation.

 A→ ⋅B→ = ∣A∣∣B∣cos⁡θ\overrightarrow{A}\ \cdot\overrightarrow{B}\ =\ \left|A\right|\left|B\right|\cos\theta  

a)

Vector product

b)

Scalar product

8.

‘The magnitude of A multiplied by the component of B parallel to A’.

This statement is referring to

a)

dot product

b)

cross product

9.

Resolve the vector to its horizontal component

a)

 x=14 sin⁡ 55x=14\ \sin\ 55  

b)

 x=14 cos⁡ 55x=14\ \cos\ 55  

c)

 x=55 cos⁡ 14x=55\ \cos\ 14  

d)

 x=55 sin⁡ 14x=55\ \sin\ 14  

10.

A gradient of velocity against time graph shows an object's

a)

distance

b)

speed

c)

acceleration

d)

displacement

11.
During which interval is the object not moving?
a)
B to C
b)
C to D
c)
D to E
d)
only at point A
12.

During which interval is the object traveling at a constant velocity?

a)

B to C

b)

D to E

c)

F to G

d)

all above

13.

Describe this graph

a)

object move to left

b)

constant acceleration

c)

increasing displacement

d)

zero acceleration

14.

Describe this graph

a)

constant acceleration

b)

constant deceleration

c)

object move to the left

d)

constant velocity

15.

Why does a car accelerate as it round a corner at a constant speed?

a)

Its speeds up

b)

Its direction changes

c)

It slows down

d)

It doesn't

16.

Which graph(s) represents a constant velocity?

a)

a and c

b)

b and c

c)

b

d)

a and b

17.

At what point is vy= 0 m/s?

a)

A

b)

B

c)

C

d)

D

e)

None of these points

18.

At what point is vx= 0 m/s?

a)

A

b)

B

c)

C

d)

D

e)

None of these points

19.

Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?

a)
b)
c)
d)
20.

Who do you agree with?

a)

Anita: “A projectile’s vx changes because of gravity, and its vy remains constant.”

b)

Barry: “Both vx and vy are constant.”

c)

Chris: “A projectile has no acceleration in the vertical dimension but it does accelerate horizontally.”

d)

Dave: “A projectile has vertical acceleration and a constant horizontal velocity”

21.
If you throw a baseball straight up, what is its velocity at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
22.
If you throw a baseball straight up, what is its acceleration at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
23.

The more mass an object has, the faster it will fall.

a)

True

b)

False

c)

I don't know

d)

I think so, Miss.

24.

What is the horizontal acceleration of a projectile?

a)

0 m/s2

b)

9.8 m/s2

c)

a = (v-u)/t

d)

a = s/t

25.

The difference between a car hitting a wall vs. a car hitting a mattress is

a)

the Impulse on the car hitting the wall is greater

b)

the change in momentum of the car hitting the wall is greater

c)

the force on the car hitting the mattress is greater

d)

the collision time of the car hitting the mattress is greater

26.

The units for Impulse are

a)

N s-1

b)

N.s

c)

kg m s-2

d)

kg m s-3

27.
The impulse-momentum theorem states that
a)
the impulse on an object is equal to the change in momentum it causes 
b)
the force on a moving object is equal to the magnitude of the impulse.
c)
the impulse on an object is greater than the change in momentum it causes 
d)
the impulse on an object is less than the change in momentum it causes
28.

Conservation of momentum states that

a)

in an isolated system, the total external force is zero

b)

in an isolated system, the force is conserved

c)

in an isolated system, the product of the momentum is zero

d)

in an isolated system, the total kinetic energy of the system is zero

29.

Can a bullet have the same momentum as a truck?

a)

Yes

b)

No

c)

Depends on the case

d)

I don't know

30.
Which takes more force  to catch, a bowling ball or a ping pong ball?
a)
bowling ball because it has more momentum
b)
ping pong ball because it has more momentum
c)
both require the same amount of force when catching
d)
bowling ball because it has less momentum
31.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
32.

If a car collide with a stationary truck and stick together, what will happen to their velocities?

a)

Velocities will increase

b)

Velocities will decrease

c)

Velocities will stay the same

d)

None of the above

33.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
34.

The momentum of an object depends upon the object's ___________&_____________.

a)

size and shape

b)

mass and speed

c)

mass and velocity

d)

mass and energy

35.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
36.

Name the missing force...

a)

frictional force

b)

weight

c)

thrust

d)

normal force

37.
A box slides across a perfectly smooth floor at a constant velocity. (The phrase "perfectly smooth" suggests that there is NO friction). What forces act on the box?
a)
tension, gravity
b)
tension, gravity, normal force
c)
tension, gravity, normal force, friction
d)
gravity, normal force, friction
38.

You and your friend are playing tug of war. Your friend pulls with a force of 55 N to the right. You pull with a force of 65 N to the left. What is the net force on the rope?

a)

10 N left

b)

20 N

c)

10 N left

d)

10 N right

39.

Could this boat be moving? If it is, is it accelerating, decelerating, or moving at a constant speed?

a)

No

b)

Yes, accelerating

c)

Yes, decelerating

d)

Yes, moving at a constant speed

40.

When 2 teams are in a tug of war game, and neither team is winning, what is the net force?

a)

100 N

b)

0 N

c)

50 N

d)

2 N

41.
The sum of all forces acting on an object and direction
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
42.

Ted is trying to move a fridge through his house, he gets stuck on a carpet and even though he is pushing the fridge, it is not moving. What force is acting against him?

a)

Gravity

b)

Friction

c)

Air

d)

Mass

43.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
44.

What is Newton's 2nd Law?

a)

F = ma

b)

F = 0

c)

Law of Inertia

d)

FAB = - FBA

45.

If ball W has more mass than ball D what will more than likely happen?

a)

Ball W moves down but ball D stay in the same place

b)

Both ball will stay in same place

c)

Both ball will accelerate to the right

d)

Both ball will accelerate to the left

46.

The force that makes pulls things down to Earth is called?

a)

Normal force

b)

Frictional force

c)

Centripetal force

d)

Gravitational force

47.

The dimensional formula for momentum is:

a)

M L2 T2

b)

M L T

c)

M L T-1

d)

M L T-2

48.

Miss in a word

a)

Beautiful

b)

Beautiful

c)

Beautiful

d)

Very beautiful

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