Motion
The rate at which something is able to move or operate
What is speed
This law states that Force is equal to mass times acceleration
What is Newton's 2nd Law
What is the net force if two people pull with a force of 20 N each to the right?
What is 40 N to the right
A push or pull
What is Force
A change in speed or direction
What is acceleration
This Law states that an object at rest stays at rest unless acted on by an unbalanced force
What is Newton's first law
What is the net force if two people play tug of war and each pull in opposite directions with a force of 20 N?
What is 0 net force
Speed + Direction
What is velocity
The equation to calculate speed
What is distance/time
This law states that an object in motion remains in motion with the same speed and direction unless acted on by an unbalanced force.
What is Newton's first law
Tendency to do nothing or remain unchanged
What is inertia
When unequal forces cause the object to move
What is unbalanced forces
A quarterback throws a football 40 yards in 4 seconds. What is the average speed of the football?
What is 10 yards/second
40/4=10
This law states that for every action there is an equal and opposite reaction.
What is Newton's 3rd law
A soccer ball was kicked, it had a mass of .42 g and accelerated at a rate of 25 m/s2. What was the force?
What is 10.5 N
F= .42 x 25 m/s2
When 2 equal forces act on an object, does not move
What are balanced forces
A plane flies from Houston to NYC in 4 hours. The distance it travelled was 1627 miles. What was the average speed of the plane?
What is 406.75 miles/hour
1627 miles/4hours= 406.75 mph
This law states that acceleration is produced when a force acts on a mass. The greater the mass the greater the force needed to accelerate it.
What is Newton's 2nd law
A force of 20 N acts on a .5 g block.
Calculate the acceleration.
What is 4 m/s2
20N= .5 x A
20N/5= 4
Resistance when the surface of an object moves over another surface
What is friction