Physics Vocab
The force that pulls all objects toward Earth.
What is gravity?
The formula for speed is distance divided by ______.
What is time?
Convert 3.2 kilograms to milligrams.
3,200,000 mg
According to Newton’s First Law, an object in motion stays in motion unless acted on by a(n) ______.
What is an unbalanced force?
The measurement of the pull of gravity on an object.
What is weight?
If a car travels 100 meters in 20 seconds, what is its speed?
Convert 3 pounds to milligrams.
1,358,400 mg
A baseball and a bowling ball are both kicked with the same force. Which one will roll farther, and why?
The baseball, because lighter mass means greater acceleration.
(Newtonʻs 2nd Law)
The force exerted by the surface of an object when another object moves against it.
What is friction?
Velocity is speed with ______.
What is direction?
Convert 12.6 miles to centimeters.
≈2,028,600 cm
Newton’s First Law is also called the Law of ______.
What is inertia?
“Inertia” is the tendency of objects to resist changes in motion.
The measurement of how much matter an object contains.
What is mass?
A runner speeds up from 2 m/s to 6 m/s in 2 seconds. What is their acceleration?
What is 2 m/s²?
2 yards to millimeters.
1 in=2.54 cm
1828.8 mm
Newtonʻs 2nd Law says force equals _____ x ______.
Steady speed achieved by an object freely falling through a gas or liquid.
Ex: A typical _______ ________ for a parachutist who delays opening the chute is about 150 miles (240 kilometers) per hour.
What is terminal velocity?
Name one way acceleration can happen without speeding up.
What is slowing down (deceleration) or changing direction?
A fish tank has a volume of 2.5 cubic feet. Convert this volume into liters.
1ft^3=1728in^3
1in^3=16.387mL
≈ 70.85L
When you jump off a small boat into the water, the boat slides backward. What does this tell you about forces?
Every action has an equal and opposite reaction (Newtonʻs 3rd Law)