Physics
The unit for acceleration
m/s2
The unit for velocity
m/s
This physical quantity stays the same no matter where you are in the universe.
Mass
What is the acceleration formula?
a=(V-U)/t
the acceleration due to gravity
9.8 m/s2
If an object is at rest, what is its velocity?
0 m/s
A hammer and a feather are dropped at the same time on the moon. They both reach the ground at the same time. Why?
There is no air, so all objects will fall at the same rate
Does your weight increase or decrease when travelling to the Moon?
Decreases
This is the formula to calculate Speed
What is distance ÷ time?
An object slowing down is said to have this type of acceleration.
What is deceleration?
What is "g"?
Acceleration due to gravity in formulas
The amount of mass per unit volume.
What is Density?
The difference between weight and mass
Mass is what makes up the object, weight is how gravity or acceleration acts on an object's mass.
The difference between Scalar and vector.
Scalar only indicates magnitude while vector indicates magnitude and direction.
In acceleration formula, what does V stand for?
Final Velocity
A gun is fired directly into the sky, what would the velocity of the bullet be when it reaches it's maximum height?
0 m/s
Otis has a mass of 45 kg; what is his weight on the surface of the Earth?
(45 )(9.81 ) = 441.45 N
What are the forces acting on a ball thrown into the air
Air resistance and gravity
What does the second law of newton indicate?
The force of an object is equal to the mass times the acceleration of the object, or, the acceleration of an object is equal to the force divided by the mass.
The gradient for a speed-time graph.
What is acceleration?
The distance a car travelled if it drove at 40 m/s for 30 minutes (Convert to km)
72 km?
D = v*t = 40 m/s * 1800 s
D= 72,000 m = 72 km
A metal cube has density 8000 kg/m³ and mass 4 kg. Its volume is ____.
0.0005 m³
What is the acceleration of an object that changes its speed of 45m/s to 75m/s in 5 seconds?
6 m/s^2
Tyler runs the basketball court 5 times (from one side back to the other 5 times). Ending in his original starting place. What is Tyler's displacement at the end of his run?
0 meters. He ended where he started
Name the three laws of motion stated by Isaac Newton
*First law: Every object in rest will remain that way until an external force acts upon it, and every object in movement will stay that way until an external force acts upon it (intertia law).
*Second Law: The Force of an object is equal to the mass of the object times the acceleration.
*Third law: for every action there's an equal reaction in magnitude and in the oposite direction