WorksheetsLaw's of Motion Section 3
Total questions: 20
Worksheet time: 19mins
What is Newton's 3rd Law of motion?
An object in motion will stay in motion unless acted on by an outside force.
Force is the product of mass and acceleration.
For every action, there is an equal or opposite reaction.
There are only two Laws of Motion
According to the third law of motion, action and reaction forces act on
The same object
Different objects
The ground
Write down an example of Newton's third law
What is the momentum formula?
p=mv
p=ma
p=F/d
p=v/t
What is the Momentum of a car with a mass of 1,000 kg traveling at a speed of 18 m/s?
55.6 kg x m/s
1.8x10^7 kgxm/s
18,000 kg x m/s
18 kg x m/s
What is the mass of a person walking at a speed of 0.8 m/s if their momentum is 52 kg x m/s?
65 kg
6.5 kg
41.6 kg
25 kg
Find the momentum of a 5 kg object moving 3 m/s.
15000 kg x m/s
1.6 kg x m/s
50 kg x m/s
15 kg x m/s
How do the mass and velocity of a moving object affect its momentum?
As mass or velocity increase, momentum increases
As mass or velocity increase, momentum decreases
As mass or velocity decrease, momentum increases
Which of the following is an example of Newton’s Third Law of Motion?
Rowing a boat (When you move forward, paddle pushes water backwards causing you to move forward)
A rocket launch (burning fuel causes rocket to push forward, as the exhaust gas pushes backwards)
Swimming(swimmer pushes against water as water pushes against the swimmer)
All of the above are examples of Newton’s 3rd law.
Use the momentum formula to determine which object has the largest momentum
A 1,000 kg object moving 4 m/s
A 100 kg object moving 5 m/s
A 3,000 kg object moving 1.5 m/s
A 100 kg object moving 50 m/s
Mo Mentum rolls a 5.2 kg bowling ball down a lane at a speed of 3.7 m/s. Val Ocity rolls a 5.2 kg bowling ball down a lane at a speed of 4.1 m/s. Who had the greater momentum?
Mo
Val
Ms. S. rolls a 5 kg ball at a speed of 4 m/s. Mr. A rolls a 4 kg bowling ball at a speed of 5 m/s. Who had the higher momentum?
Mr. A
Ms. S
They will be equal
Which is the action force?
Force on hot gas
Force on rocket
How many laws of motion are there?
0
1
2
3
What has greater momentum, a 500 kg object moving 2 m/s or a 10 kg object moving 2 m/s?
The 500 kg object
The 10 kg object
They are the same
Which is NOT an example of Newtons third law?
The Earth pulls down on you and the floor pushes up on you
You push on a tree with your hand and the tree pushes back on your hand
Johnny exerts a force on Billy and Billy exerts a force on Johnny.
A horse exerts a force on the cart and the cart exerts a force on the horse.
The momentum of an object standing still is
Zero
10 kg x m/s
Unimportant
None are true
Based on Newton's third law of motion, when a person on a skateboard throws a heavy concrete block to the left the person will be pushed to the ___________.
Left
Right
Find the momentum of a 0.067 kg ball rolling at a speed of 3.2 m/s
2.1 kg x m/s
0.2144 kg x m/s
0.2093 kg x m/s
44 kg x m/s
If an object with a momentum of 150,000 kg x m/s is moving at a speed of 43 m/s, what is the mass?
0.00028 kg
6,450,000 kg
43 kg
3,488 kg
