Newtons Laws A
What is the resistance to a change in motion called?
What is inertia
If something with a mass of 40 kg, is pushed with a force of 120N, what is the acceleration of the object?
3 m/s2
The Unit of force is this.
What is the Newton?
What is the units for acceleration?
Meters per second squared
IF something is moving at a constant speed, is it balanced or unbalanced?
balanced
What is the missing word?: An object at _____ remains at ______, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.
Rest
If forces are equaled out, they are _________ forces.
Balanced
an object in motion stays in motion unless acted upon by an outside force, is an example of which law?
Newton's first law
Which law? F=ma
Newton's 2nd law
What determines the amount of potential energy an object has.
Its position.
One object pushing on another will always receive a push in return. True or false.
True
Inertia?
What happens when a rocket launches to make it an example of Newton's Third Law?
As the fuel burns, gases push against the rocket, moving it upward.
If you put a notecard on a cup, and a penny on top of the notecard and flick the card so the penny falls in the cup, which force is acting on the penny so it falls down?
gravity
If a box is being pushed with a force of 5 N to the right and also being pushed, in the opposite direction with a force of 12 N, would you add or subtract to find the net force?
subtract
What causes a ball that has been kicked across the ground to stop?
Friction
Objects with more mass are ______ to set in motion.
harder
how do you find speed?
What is distance divided by time
If someone is pushing a box with 15 Newtons of force to the right, and another person is pulling the box with 5 N of force, what is the net force?
20 N to the right
If two rocks with different masses are rolling down a hill, will the bigger rock, or smaller rock take more force to stop?
the bigger rock
According to Newton’s Second Law, if the force increased but the mass remained the same, what happened?
The objects acceleration increased.
dribbling a basketball is an example of which law?
What is Newton's third law
A ball bounces away when another ball hits it. Which law does this demonstrate?
Newton's 3rd law.
Why should we wear seatbelts – use one of Newton’s Laws in your answer?
We should wear seatbelts so if we are in an accident our body doesn’t keep moving at the same speed and in the same direction that the car was going. A new force would be introduced to our bodies (the seatbelt) in order to keep our bodies in place.
What does an aerialist walk on (in a circus)?
tightrope