A feather and a rock dropped at the same time from the same height would land at the time when dropped by
Who is an astronaut on the moon?
100
When you bump into someone standing still, you can knock them over because of
What is Momentum?
100
An example of an object in projectile motion is
What is a leaping frog?
100
Although, astronauts appear to be weightless, they are not because...
What is their mass does not change, so the astronauts would always have some gravitational attraction to objects - and therefore, they have weight.
100
Terminal velocity is reached when the net force on a falling object reaches
What is Zero Newtons?
200
Inertia is used when explaining Newton's
What is first law of motion?
200
Parachutes slow skydivers to a safer terminal velocity because parachutes increases
What is air resistance?
200
If a car driver suddenly makes a sharp turn, the passenger slides to the side of the car because of
What is inertia?
200
Air resistance is
What is fluid friction?
200
Which of the following is and example of free fall...
a skydiver falling from an airplane, a floating astronaut in orbit around Earth, a ball falling from a rooftop, or tossing a set of keys to a friend?
What is a floating astronaut in orbit around Earth?
300
Because of projectile motion, when aiming at the target you should aim
What is above the bull's eye?
300
Which of the following has the most momentum...
an ant moving at 1 m/s, a car moving at 13 m/w, a bird flying at 4 m/s, or you riding your bike at 12 m/s?
What is you riding your bike at 12 m/s?
300
A golf ball and a bowling ball are moving at the same velocity. Which has more momentum?
What is the bowling ball, because it has more mass?
300
Which of the following will have the greatest air resistance?
an acorn, a crumpled-up sheet of paper, an 8 1/2" X 11" sheet of paper, or an apple.
What is an 8 1/2" x 11" sheet of paper?
300
The amount of air resistance acting on an object depends on the object's
What is size and shape?
400
Orbital motions is a combination of forward motion and
What is free fall?
400
Conservation of momentum is explained by Newton's
What is third law of motion?
400
Constant velocity, balanced net force, and a result of air resistance are examples of
What is terminal velocity?
400
_____ is a measure of inertia
What is mass?
400
If three balls of different materials were dropped at the same time from the same height, which would hit the ground first? (assume there is no air resistance)
What is they would all hit at the same time?
500
The curved path traveled by a thrown baseball is known as
What is projectile motion?
500
Galileo proved that the rate at which as object falls is not affected by
What is mass?
500
After a motor pulls the roller coaster cars up the first hill. what keeps the cars moving up and over the following hills, turns, and loops?
What is gravity, inertia, and acceleration?
500
Projectile motion has two components. What are they?
What are horizontal and vertical?
500
Newton's first law of motions applies to
What are moving objects and objects that are not moving?