Speed
What is the formula for speed?
s= d/t
What is the definition of acceleration?
the rate that velocity changes
what is the unit force is measure in?
Newtons
What is Newton's First name?
Isaac - Sir Isaac Newton
What are two types of energy we have talke about?
thermal, kinetic, potential...
speed is interchangeable with what other word?
velocity
What is the equation for acceleration?
a= (Fv-Iv)/t OR a= v/t
What is the constant force on Earth?
Gravity
How many Laws of Motion did Newton write?
3 (inertia, F=mxa, action & reaction)
A roller coaster has the most potential energy at what point along the course?
At the top of a hill/drop
Lucy uses the chair lift to get to the top of the mountain. Calculate the speed of the chair lift if it takes 360 Seconds to get the the top of the ski run that is 1400m away?
3.0ms
Lucy takes off from the top of ski run. It takes her 170 seconds to reach the bottom of the ski run and she travels at a speed of 8 ms , calculate her acceleration.
0.05 ms2
What is the constant number you use in a formula for gravity?
9.81
What is the Name of Newtons 1st law of motion and what does it mean?
Inertia- the tendency of an object to resist a change in its state of motion
Kinetic and potential energy have what type of relationship?
opposite or inverse
A planes average speed between 2 cities is 600km/hr. If the trip takes 2.5 hrs, how far does the plane fly?
1500km
A ball rolls down a ramp starting from rest. After 2 seconds, its velocity is 6 meters per second. What is the acceleration of the ball?
3ms2
what force slows down object that are moving
friction
What will happen, according to Newtons' Laws, if you are riding a skateboard and it hits the curb with the front wheels? Include 1 of Newtons laws in your answer.
1st law- body will move adn fly off because board has stopped
Wind blowing through your hair is what type of energy? (kinetic or Potential)
Kinetic
A person jogs 4 km in 32 minutes then 2 km in 22 minutes and finally 1 km in 15 minutes. What is the joggers average speed in Km/min?
0.1km/m
A car traveling at 10ms starts to decelerate steadily. it comes to a complete stop in 20 seconds. What is its acceleration?
-0.5ms2
What are the 4 different types of friction?
sliding, static(constant), rolling, fluid
Describe a scenario that involves all 3 of Newton's laws.
Ms. Douglass needs to approve.
What happens when you are on a skate ramp and you start at the top however, by end, are at the bottom of the U eventually?
because of friction and gravity- law of conservation of energy