Show:
Calculate
Laws
Balanced or Unbalanced?
Force in Newtons
Wild card
100
Remember P=mv What is the momentum of a 650 kg truck traveling 60 m/s?
What is 39,000 kg x m/s
100
T/F: Newton's Third Law states that for every action there is an equal and opposite reaction.
What is true
100
In a fight over a shirt with your sister, you get into a tug of war. What are the forces acting on the shirt?
What is you on the shirt and the shirt on you.....also.....your sister on the shirt and the shirt on your sister.
100
If you push a safe 50 N to the left, and your friend pushes it 40 N to the right, what is the net force an direction of the safe?
What is 10 N to the left
100
Two papers are dropped from my hand at the same height. Both papers weight the same. If one is crumpled, but the other flat, which paper will hit the ground first and why?
What is the crumpled paper because the flat has more surface area and therefore more air resistance.
200
Find the acceleration of an object that has a force of 600 N and a mass of 60 kg?
What is f=ma, so 600=60/x...you divide both sides by 60 and get 10 m/s squared
200
If you and a friend are fighting over a book and the book is moving towards your friend the forces are? A. balanced B. unbalanced C. forever in your favor D. centripetal
What is B. unbalanced
200
Your friend helps you move a book shelf, but unfortunately it is so tall that you two do not realize you are pushing in opposite directions. If you push it with a force to the right at 90 N, and your friend pushes it to the left at 60 N, what is the net force of the bookshelf?
What is 30 N
200
Forces that move in opposite direction but are equal in mass are __________ forces. A. net B. unbalanced C. balanced D. none of the above
What is C. balanced
300
If you have a 5000 N object that accelerates at 50 m/s squared, what is the mass of the object?
What is Mass is in kg....so you would divide 5000/50=100 kg
300
An object that is moving in a curve accelerates in the __________ of the centripetal force.
What is direction
300
Unbalanced forces change the _______ of a moving object.
What is velocity (or acceleration)
300
In the last question, you and a friend were pushing a bookshelf. If the reference direction was to the left, what would have been the net force?
What is -30 Newtons, because you pushed it 90 right and your friend pushed it 60 left, but since the direction was left it was negative.
300
What is the formula for acceleration?
What is you would use F=ma, but then you would divide instead of multiply to solve for the acceleration.
400
A train is moving with a force of 100 N and carries a weight of 50 kg. What is it's acceleration?
What is 2 m/s squared
400
When an object circles a larger object it is a _________, and this is __________ force.
What is satellite, centripetal
400
Mrs. Hellard sits on a chair and is not moving. Is there a force at work if I am not moving?
What is yes-the force is action-reaction. Me on the chair and the chair on me.
400
If you have double the mass on Jupiter as you do on Earth, and you weigh 500 N on Earth, what would you weigh on Jupiter?
What is 1,000 N
400
Earths _______ keeps the Moon in orbit around the Earth.
What is gravity
500
John has a mass of 65 kg and is running at a velocity of 5 m/s. What is John's momentum? Hint: P=m x v
What is 325 kg x m/s
500
If there was no gravity and you threw a rock up in the air, how would the rock travel?
What is in a vertical line up into the air (straight-no curved path)
500
T/F: If a reference direction is to the left, and you have a force of 10 N going to the left, but 60 N to the right, what is the net force?
What is -50 N
500
If a force acts on a moving object in the same direction of that object, what will happen to the object?
What is they will speed up
500
Forces change an objects motion by changing the _______ and _________.
What is speed, direction