What are forces that oppose the movement between two surfaces in contact?
100
Unbalanced forces on an object results in this
What is acceleration?
100
Which law discuses forces that cause and object to change its motion.
What is Newton's 1st Law?
200
Finish this statement: Newtons first law states that an object in motion stays in motion...
What is "and an object at rest stay at rest, unless acted upon by an unbalanced force"?
200
A small car and a large car are pushed with the same force, which of the two cars would have faster acceleration.
What is the small car?
200
True or false: Sliding force is generally larger than static force.
What is false?
200
Units of Newtons
What is kg/m/s2?
200
Two 20L buckets are in the back of a truck. One has 30 kg of rocks in it and the other has 10 kg of rocks in it. The trucks stop suddenly and the bucket slide forward. This bucket will slide farther.
What is the 30kg bucket?
300
True or false. Zero net force means an objects has zero velocity.
What is false?
300
An object with a mass of 50g is pushed with a force of 300N. What is its acceleration?
What is 6m/s2?
300
As a surfaces gets smoother friction forces will _______
What is decrease?
300
This force is perpendicular to a surface and generally opposes gravitational force.
What is normal force?
300
See Photo 2: If the hand were to pull the napkin from under the penny, the penny would ________, this is an example of this law.
What is fall into the cup, 1st law?
400
Net force=zero can be either of these two possibilities.
What is an object is at rest or an object is moving with constant velocity?
400
According to Newton's 2nd law of motion, acceleration is ______________ proportional to mass and _____________ proportional to force.
What is inversely and directly?
400
The relationship between mass, distance and the universal law of gravitation.
What is as mass increase and distance between objects decrease gravitational force increase?
400
Determine the weight of a person who has a mass of 10g.
What is 10g times gravity= 9.8m/s2 = 98N?
400
Reason rockets are able to propel upwards
What is Newton's 3rd law?
500
According to Newton's 3rd law, every action has a equal and opposite reaction, if that is the case why doesn't net force equal zero.
What is the two forces act upon different objects; only forces on the same object can balance each other?
500
See photo 1: Look at the free body diagrams, the following choice(s) depict an object moving to the right with a constant speed.
What is A and C?
500
See photo #4: The couch is not moving, this is an example of this type of force. State the direction and magnitude of force.
What is static friction? Force of person is to the right, static friction is opposite of that force.
500
See Photo 3: Direction and magnitude of the force exerted by the wall and elephant and the law that supports it.
What is 500 N towards the wall and elephant and Newton's 3rd law?