Newton's law
what is the Second law?
Force and Acceleration
what are some helpful things about friction?
walking, brakes, heat when rubbing hands
what is the equation for acceleration?
VF-VI/time
A property of a moving object that depends on the objects mass and velocity.
If you pull something in the same direction are you subtracting or adding?
Adding
what is the first law?
Law of Inertia
what are some harmful things about friction?
slipping on ice, wet roads, mudslides
What is the equation for velocity?
Distance in a Direction/time
What happens when a object hits another object?
Some or all of the Momentum is transferred to the object.
what is a reference point?
a point that tells us a object moves.
How does the skateboard activity relate to the third law?
The ball was the Action and the Reaction was the person.
What is an example of sliding friction?
pushing a box across a table.
what is Equationf or Speed?
Distance/time
How does the pool game represent momentum?
When one ball hits the other it will transfer the momentum to the other ball and send it forward.
If you were pulling something in the oposite direction do you add or subtract?
subtract
How does riding a bike a good example of the second law
the Bicycle is the mass, and your legs are pushing the pedal which is the force.
what is an example of rolling friction?
rolling a wheel across the ground.
A man Walkes 20km in 4 hours. Find his Speed?
speed= 5 km/hr
What is the Equation for momentum?
p=mv
A car travels along a straight road at constant 72 km/h. Determine the car’s distance after 2 minutes and 5 minutes.
= 20 m/s
What law represents the balloon activity that we did in class.
Third Law
When a car slows down is it showing friction? true and false
true
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. what is the acceleration of the car.
8.10 m/s/s
How is Bowling a example of Momentum?
When the ball gets throw it transferred the momentum to the pins.
The house of cards activty had __________?
0 net force