Newton's Laws
Who is Sir Isaac Newton
what is acceleration ?
Acceleration is a measure of how fast velocity changes. Speed and direction changing
What is the strength of gravity on earth
9.8N
What is free fall ?
movement under the force of gravity only
what is the equation for speed
distance/ time
Newton's first law states
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Calculate the acceleration of Josh riding his bicycle in a straight line that speeds up from 4 m/s to 6 m/s in 5 seconds.
.4 m/s
Calculate the weight of a car with a mass of 1500 kg.
14,700N
How fast will a ball be traveling if it falls for 17 seconds?
166.6m/s
A car is traveling 50 meters in 3 seconds, what is it's speed?
16.66m/s
Newton's second law is that...
It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
F=MA
Cody’s car accelerates from 0m/s to 45 m/s northward in 15 seconds. What is the acceleration of the car?
3m/s
The strength of gravity on the Moon is 1.6 newtons per kilogram. If an astronaut's mass is 80 kg on Earth, what would his weight be on the Moon?
128N
How fast will tennis ball be falling if dropped off a building and it takes 4 seconds for it to hit the ground
39.2 m/s
A car is traveling North at 100 meters in 2 seconds what is its velocity?
50m/s north
What is newton's third law?
Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction.
Dean is slowing down on his skateboards. He starts at a speed of 5.5 m/s and slows to 1.0 m/s over a time of 3.0 seconds. What is Dean’s acceleration?
A backpack weighs 8.2 N on the moon, and has a mass of 5 kg. What is the strength of gravity ?
1.6 N/kg
An apple falls out of a tree and takes 3.75 seconds to strike the ground. How high was the apple from the ground?
68.90
What is the difference between speed and velocity
velocity includes direction
Isaac Newton's Mother wanted him to be a?
Farmer
A fish swimming at a constant speed of 0.5 m/s suddenly notices a shark appear behind it. Five seconds later, the fish is swimming in the same direction at a speed of 2.5 m/s. Calculate the fish’s acceleration?
.8m/s
Calculate the weight (in newtons) of a 5.0-kilogram backpack on Earth
49N
A plane drops a C.A.R.E. package to some needy people in the jungle from a height of 1300 m. How long will it take the package to strike the ground?
16.28
A man is running 3 meters in 4 seconds what is his speed?
.75 m/s