Celestial Bodies
This Celestial Body has the most mass in the entire Solar System.
The Sun
Which statement is correct:
A. The more massive an object, the more force is needed to accelerate it.
B. The more massive an object, the less force is needed to accelerate it.
A. The more massive an object, the more force is needed to accelerate it.
Newton used the idea of a cannon to explain how ______ worked.
orbit
Kinetic energy is the energy of what?
movement/motion
True or False: You can completely escape Earth's gravity
False. Gravity extends out forever.
Despite having different masses and sizes, these two planets have the same surface gravity.
Mercury and Mars
You kick Ball 1 and Ball 2 with the same force.
Ball 1 accelerates at 5 m/s2
Ball 2 accelerates at 10 m/s2
Which ball had more mass?
Ball 1 (5 m/s2)
What shape will the path of a cannonball have when fired on Earth?
A curved path.
Faster moving objects have ______ kinetic energy than slower moving objects.
more
When astronauts trip and fall on the moon, do they start falling toward the Moon or toward Earth?
Toward the Moon. (They're much closer to the Moon's center of mass than the Earth's center of mass)
This is the largest and most massive planet in the solar system.
Jupiter
Complete this formula:
Acceleration equals _______.
acceleration equals force divided by mass
a = f / m
If the Earth didn't have gravity, what shape would the path of a cannonball be?
A straight line.
Fill in both blanks: Potential energy is the energy _______ in an object due to the object's ______.
stored
position
How does the Moon's gravity affect the Earth?
The pull of the Moon's gravity creates the high/low ocean tide.
9.8 m/s2
A 10 kg mass ball is accelerated at 5 m/s2.
How much force was applied to the ball?
50 Newtons
F=ma
F = (10kg)(5m/s2)
Fill in the blank: Newton explained that all objects in orbit are _________, but they never hit the ground.
falling
2 cars are travelling at the same speed.
Car A has a mass of 1500 kg.
Car B has a mass of 1200 kg.
Which car has more kinetic energy?
Car A (more mass)
What happens to the strength of gravity as you get farther from an object?
The gravity gets weaker
Despite being 15 times more massive and 4 times the size, this planet has less surface gravity than Earth.
Uranus
A rock is thrown with 30 Newtons of force.
The rock accelerates at 2 m/s2.
What is the mass of the rock?
15 kilograms.
m = f / a
m = (30N) / (2m/s2)
It would fall into Earth because of gravity.
2 logs of equal mass are about to be rolled down a hill.
Log A is at a height of 10 meters.
Log B is at a height of 30 meters.
Which log has more potential energy?
Log B (higher height)
There is a galaxy that is being pulled toward our galaxy by gravity and will collide with it in 6 billion years. What is the name of that other galaxy?
Andromeda