POSITION vs. TIME GRAPH
VELOCITY vs. TIME GRAPH
Acceleration
A Car starts from rest and accelerates to 50 m/s in 2.5s.
What is the cars acceleration?
Which Law?
You kick a ball, exerting a force on the ball. The ball exerts a force back
on your foot.
Which Law is this? Can you state it?
What are these forces called?
Forces
• What are unbalanced forces?
• Give an example
• What do unbalanced forces cause?
• Calculate
Newton’s
nd
2
Law
• State the Law:
• What is the relationship between Force, mass and acceleration?
• If I push a 10 kg mass with a 5N force, what is the acceleration?
• How does that change if the mass is halved?
• If I push a 15kg mass with a 5N force what is the acceleration?
• What if use a 10 N force?
Forces
What forces are acting on the tractor?
What forces are equal? What forces allow for the tractor to pull the wagon?
Newton
• A batter hits a ball.
What keeps the ball moving?
Net Forces
• A 28kg box is pushed across the floor with a 16N force, friction acts
on the box with a 3.5N force. What is the acceleration of the box?
Projectile
• As a ball is toss straight up in the air, what can be said for the initial
speed of the ball and the final speed of the ball?
• If a ball is tossed from one person to another? How could you
determine the resulting speed and any given moment?
Energy
• Define
• Potential Energy
• Kinetic Energy
Mechanical Energy
• What is mechanical energy?
• A 2 kg bird flies at a speed of 6 m/s, 20m above the ground. What is
the birds mechanical energy?
Rollercoasters
• Draw a rollercoaster and identify the points of:
•
•
•
•
Lowest PE
Highest PE
Lowest KE
Highest KE
Work
• A 25kg object is lifted 6m in 3s. How much work is done?
Collisions
• In an inelastic collison, a 25 kg object moving at 2m/s right, collides
with a 15 kg stationary object. What is the final velocity?
Momentum and Impulse
• What are the formulas for momentum and impulse?
• What is the relationship between momentum and impulse?
• Why do batters ‘follow through’, why hitting a ball?
• What is the result of ‘follow through’?
Wave Interference
• What is constructive interference?
• What is destructive interference?
• Can this be calculated? Give an example
Wave Behavior
• Define and Draw a picture of :
• Diffraction
• Refraction
• Reflection