the tendency of objects to keep doing what they are doing.
100
what is newtons third law of motion
for every action there is an equal and opposite reaction
100
which of the following is an example of an contact force
B
100
Zack throws a ball straight up into the air. The height of ball of different times is shown in the table below
D
200
what is contact force
a force that must touch an object to change its speed and/or directions
200
what is net force
the amount by which the opposing forces acting on an object are unequal
200
what is non-contact
a force that acts on an object to change its speed or direction from a distance
200
In which situation are the force acting on the object balanced
C
200
in outer space ball of rock and ice travels for thousand of years. its motion does not change in any way during that time. As it approaches the solar system however it comes under the influence of the Sun gravity and its motion begins to change. which principle does this demonstrate
B
300
what is force
a push or pull that causes something to change its motion
300
what is newton
the metric unit used to measure force or weight
300
what is normal force
the force that pushes up to support the weight of an object
300
The net force acting on an object is 0 N. Which of the following best describe the motion of the object?
D
400
what is friction
a force that occurs when two things move past each other and rub together
400
what is newton first law of motion
if the forces acting on an object are balanced the objects will continue doing what it is doing
400
Sean pushes a parked car with a force of 80 newton (N). The car does not move. Which of the following best describes the force that the car exerts of Sean
A
400
Tamara rode her bicycle to her friends house. The distance time graph shown above represent Tamara's trip. Describes Tamara's speed and the net force acting on her bicycle between 15 min and 20 min.
her speed is contact
500
what is gravity
a force that acts without physical contact to pull two object toward each other
500
what is newtons second law of motion
an acceleration on an object is related to the net force acting going on it and the mass of the object
500
Which force has the greatest influence on the structure of solar system and galaxies