Rel Motion & Acceleration
This method is used to graphically solve for the resultant vector.
Tip to Tail
What is a projectile?
An object in the air
What is Newton's First Law
An object in motion will stay in uniform motion and an object at rest will stay at rest, unless acted on by an external force.
What is one way you can accelerate if velocity is constant? (think circle)
change in direction
________ is neither created nor destroyed, but only changed through the action of forces as described by Newton's laws of motion. This is the law of conservation of ________. (blanks are the same)
Momentum
What is acceleration?
A change in velocity over a period of time.
What is true about the velocity of a projectile in the x-component?
It is constant
What is Newton's 2nd Law?
The acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
How old is Alex?
17
True or false: Time has an inverse relationship with velocity.
False, Time has an inverse relationship with force.
What is it called when we use trig to break up vectors at angles?
Component breakdown
Calculate the x and y component of a velocity vector that has a magnitude of 39.0 m/s at an angle of 19º above the horizontal.
Vx = 36.9 m/s, Vy = 12.7 m/s
What is Alex's least favorite class?
Psychology :(
Centripetal force is a ______ seeking force.
Center
When two cars collide and stick together for the aftermath, this is called an _________ collision.
inelastic
Calculate the resultant vector (Both Magnitude & Direction) of the following vector.
8.6 m/s North and 17.4 m/s South
8.8 m/s South
What sport does Mr Bank coach?
Football
Kieran is pulling a 3.0 kg sled with her 2.0 kg hydro flask on it (it keeps falling off) at an angle of 27º above the horizontal. If she is pulling with a force of 9.1 N, what is the force of friction acting on the sled if it is moving with a constant velocity?
-8.11 N
Joe is swinging Mike around in a circle. If the circle’s diameter is 2.9 meters, calculate the force Mike feels in his feet if he weighs 60 kg and the tangential speed is 3.6 m/s.
F = 536.28 N
Matt & Courtney are playing bumper cars at 6 Flags. Matt’s car is 370 kg and Courtney’s car is 325 kg. When they collide they experience an inelastic collision. What is their final velocity if Courtney is at rest 20 m in front of Matt and he hits her with a velocity of 3 m/s?
1.6 m/s
Sarah is crab-walking on a conveyor belt (don't ask me why) with a speed of 2.3 m/s. The conveyor belt is moving in the same direction with a speed of 6.2 m/s. How far will she get in 18 seconds?
153 meters
Stu is on a diving board standing 12 m tall, preparing himself for a belly flop with the biggest splash. He jumps up at an angle 47º above the horizontal with a velocity of 3.4 m/s. If he was airborne for 4.7 seconds, how far from the base of the diving board was he when he landed?
10.9 m
Robin and Andrew are each sitting on a swing. The chains are on a frictionless bar (so the chains are connected, think pulley). What is Robin’s acceleration of she weighs 50 kg and Andrew weighs 60 kg?
A=0.891 m/s/s
A 83.0 gram puck moves in a circle with a radius of 37.0 cm on a frictionless table. How long does it take to complete one cycle if the hanging mass in static equilibrium is 29 grams?
t = 2.07 seconds
Where did Mr Bank go to college?
UIUC