A
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
The definition of inertia
What is an object's resistance to change?
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. Which one hits the ground first, and why?
Both will hit at the same time. There is no air, so all objects will fall at the same rate
Does your weight increase or decrease when travelling to the Moon and why?
Decreases - gravitational force is less on the Moon than on earth
This is the formula to calculate Speed
What is distance รท time?
An object slowing down is said to have this type of acceleration.
What is negative acceleration?
What is "g"?
Acceleration due to gravity in formulas - 9.8 m/s2 on EARTH
A ball falls for 18s before hitting the ground. Assuming the ball is on Earth, what distance did it fall?
a (g)= 9.8 m/s2
t= 18s
x = at2 / 2 = (9.8m/s2 x 324 s2) / 2
The ball was dropped from 1587.6 meters
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.
Acceleration = ...
What is Change in velocity over change in time?
(Vf - Vi) / (t
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 slope for a distance-time graph.
What is velocity?
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
What is 127.27kg?
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