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Newton law

Total questions: 41

Worksheet time: 41mins

Name
Class
Date
1.

A person is pushed forward into their seatbelt when a car stops. This is an example of --

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

2.

A larger car takes more force to move. This is an example of --

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

3.

An action that can cause motion

a)

gravity

b)

force

c)

net force

d)

inertia

4.

Ability of an object to resist change of motion

a)

gravity

b)

force

c)

net force

d)

inertia

5.

Force pulling all object toward each other.

a)

gravity

b)

force

c)

net force

d)

inertia

6.

Which of the following has the most amount of inertia?

a)

baseball

b)

truck

c)

feather

d)

large train

7.

If a person is pushing a cart with a force of 40N and it accelerates at 0.5m/s², what is the mass of the cart?

a)

40.5kg

b)

80kg

c)

0.0125kg

d)

20kg

8.

What is the acceleration of a 3kg rock that is thrown with a force of 18N?

a)

21m/s²

b)

0.16m/s²

c)

54m/s²

d)

6m/s²

9.

A 20kg bike accelerates at 10m/s². With what force was the person pedaling?

a)

200N

b)

20N

c)

2N

d)

30N

10.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
11.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
12.

Which has more momentum: a car stopped at a red light or a bike moving at 15 m/s ?

a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
13.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
14.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
15.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
16.
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
17.
Which object listed below has the greatest momentum?
a)
A 0.05 kg object rolling at 0.2 m/s.
b)
A 0.15 kg object rolling at 2 m/s.
c)
A 0.15 kg object rolling at 1 m/s
d)
A 0.4 kg object rolling at 2 m/s.
18.
Which of the following has the least amount of momentum?
a)
An ant walking along the ground
b)
An ant at rest
c)
An elephant walking
d)
An elephant running
19.
What is the unit for momentum?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
20.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
21.
If a net force is acting on an object, 
a)
its velocity must be constant
b)
its velocity must be changing
c)
its mass must be changing
d)
its acceleration = 0 
22.

In an elastic collision, ______ is conserved.

a)

Momentum only

b)

Kinetic Energy only

c)

Both momentum and energy

23.
The recoil speed of a rifle is much less than the exit velocity of a bullet because...
a)
the rifle experiences a smaller force
b)
the rifle experiences a smaller change in momentum
c)
the rifle has a much greater mass
d)
the rifle does not obey the laws of physics
24.

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

a)

Skater 1 experiences a greater change in momentum

b)

Skater 2 experiences a greater change in momentum

c)

Skater 1 has a greater speed than Skater 2

d)

Skater 1 experiences a greater force

25.
Two blocks begin at rest with an initial momentum of zero. After the spring is sprung, the two blocks move in opposite directions. What is the total final momentum? 
a)
zero
b)
a positive value in the direction of the heavier block
c)
a positive value in the direction of the faster block
d)
more information is needed
26.
A block sliding on a frictionless surface runs into a second block of equal mass at rest. After the two collide, they stick together and travel with a velocity...
a)
that is twice the magnitude of the original velocity
b)
that is half the magnitude of the original velocity
c)
more information is needed
27.

A block of mass M slides across a frictionless surface with velocity v until collides with a stationary block of mass m. If the two blocks stick together, what is their velocity after the collision?

a)

(M+m)v / m

b)

(M-m)v

c)

Mv / (M+m)

d)

(M-m)v / M

28.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
29.
What are the units of Force?
a)
kg m/sec
b)
kg m
c)
N
d)
N sec
30.
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
31.

Inertia is the tendency of an object to resist a change in its ___________.

a)

temperature

b)

shape

c)

size

d)

motion

32.
Objects with greater _________ also have greater inertia.
a)
speed
b)
mass
c)
temperature
d)
friction
33.

Inertia is a force

a)

True

b)

False

34.

What is the relationship between heavy objects and inertia?

a)

Only heavy objects have inertia.

b)

Heavy objects have more inertia.

c)

Heavy objects have less inertia.

d)

Heavy objects have no inertia.

35.

Inertia tells us that we need ____________ to get an object moving or to make it stop.

a)

a force

b)

gravity

c)

friction

d)

strength

36.

Which phenomenon shows the effect of Inertia?

a)
b)
c)
d)
37.
the tendency of an object to resist a change in its motion
a)
acceleration
b)
inertia
c)
mass
d)
frame of reference
38.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
39.

Inertia refers to ___________

(select all the apply)(multiple answer)

a)

the tendency of moving objects to remain in motion

b)

the force which keeps moving objects in motion with a constant velocity

c)

the force that keeps stationary objects at rest

d)

the tendency of stationary objects to remain at rest

40.

Which of these has the MOST inertia?

a)
b)
c)
d)
41.

Which character would have the LEAST inertia?

a)
b)
c)
d)

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