Vocabulary
_________ forces cause an object to move.
What is unbalanced forces?
If forces are balanced an object will...
not move.
4 balls are thrown with the same amount of force. Which will go the furthest?
a) A ball with a mass of 100kg
b) a ball with a mass of 250 kg
c) a ball with a mass of 500 kg
d) a ball with a mass of 750 kg
A-- a ball with a mass of 100 kg
The Earth orbits or moves around the Sun. Is this an example of a balanced or unbalanced force?
3 wagons are loaded with items. The first has a pencil, the 2nd has a rock and the 3rd has a boy. Which wagon will go the slowest if they are all pushed with the same force?
The wagon with the boy in it.
A push or a pull
What is a force?
Jeff and Andy both throw a bowling ball. Andy's bowling ball has more mass. They both throw the bowling balls with the same force. Who's bowling ball will go farther?
Two opposite forces are pushing with 55 N of force. The other force is pushing 30 N. What will happen to the object?
The motion of the object will increase.
A soccer ball is kicked and is rolling fast along the grass. What are some of the forces acting upon the ball?
Force from the kick, gravity, friction from the grass
Which vehicle needs the most force to be stopped? A motorcycle, a truck or a plane.
A plane.
The larger the planet, the larger ___________ force it has.
Gravitational
Matthew and Michael both push a toy car. The cars have the same mass. Michael pushes with more force. Who's car will go father?
Michael's
The large ball because it has more momentum.
A person stands on a skateboard and jumps backward off the skateboard. The skateboard rolls forward when the person jumps. Which of Newton's laws does this most directly illustrate?
Newton's 3rd law
Hannah is pulling a wagon behind her bike with many books it in. What could she do to the wagon to increase her speed?
Remove some books.
For every action there is an equal and opposite reaction.
What is Newton's 3rd law?
What will happen to a kite in the air if the wind stops blowing? Explain your thinking.
It will fall to the ground due to gravity.
A rabbit runs for 2 minutes. What else do you need to know to calculate the speed of the rabbit?
a) Type of ground he is running on
b) the time of day
c) the distance the rabbit runs
d) the age of the bunny
The distance the rabbit runs
Newton's Second Law relates force, mass, and acceleration. Which equation correctly represents this law?
F = ma
A worker has a cart full of books. He removes half of the books. What will happen to the motion of the cart?
It's speed will increase.
An object at rest tends to stay at rest while an object in motion tends to stay in motion.
2 equal and opposite forces push on an object, how will the object be affected?
The object will not move.
Two children are going on a slip and slide down a hill. The first sits on the slide and goes down. The second runs and jumps onto the slide. Which child has more momentum?
The second child who runs and jumps onto the slide.
What does Newton's 1st Law of motion state?
An object will remain at rest unless acted on by an unbalanced force. An object in motion will stay in motion unless acted on by an unbalanced force.
A woman is trying to push a refrigerator. What are some ways she can make it move faster?
Your teacher will tell you if your'e correct.