Complete the statement or answers the question.
Which problems would NOT be a part of physics?
A theory is
A scientific hypothesis may turn out to be right or it may turn out to be wrong. If it is a valid hypothesis, there must be a test for proving that it is
To test a scientific hypothesis you would
Which of the following statements is not true?
Which of the following is a reason to express scientific findings mathematically?
Which has greater linear speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail?
A ladybug rests on the bottom of a tin can that is being whirled horizontally on the end of a string. Since the ladybug, like the can, moves in a circle, there must be a force on it. What exerts this force?
People in the future may well live inside a rotating space structure that is more than 2 km in diameter. Inside the structure, people on the inside of the outer edge will experience 1 g while people halfway to the axis will experience
As the rotational speed of a space habitat increases, the weight of people inside
A car travels in a circle with constant speed. The net force on the car
To weigh less in the Northern Hemisphere, you should go
The centripetal force exerted on stunt motorcyclist Biker Bob while riding on the inner vertical surface of a circular track is
Stunt motorcyclist Biker Bob rides his bike inside a futuristic rotating space station-a giant rotating donut-shaped structure in space. The normal support force feels like weight to him. As he rides his bike in the same direction that the station rotates, the normal force
Stunt motorcyclist Biker Bob rides his bike inside a futuristic rotating space station—a giant rotating donut-shaped structure in space. The normal support force feels like weight to him. As he rides his bike in the opposite direction to the station’s rotation, the normal force
Suzie Spacewalker hovers in space beside a rotating space station in outer space. Both she and the center of mass of the space station are at relative rest. If the space station is in Earth orbit, then Suzie
A game room in a rotating space habitat is located in a 0.25-g region. If a person can jump 0.5-m high in a 1-g region, how high can the same person jump in the game room?
Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. Which of the following is NOT true?
A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car’s average acceleration?
In the absence of air resistance, objects fall at constant
Suppose an object is in free fall. Each second the object falls
If you drop a feather and a coin at the same time in a tube filled with air, which will reach the bottom of the tube first?
Consider drops of water leaking from a water faucet. As the drops fall they
Suppose you take a trip that covers 180 km and takes 3 hours to make. Your average speed is
Suppose a car is moving in a straight line and steadily increases its speed. It moves from 35 km/h to 40 km/h the first second and from 40 km/h to 45 km/h the next second. What is the car's acceleration?
A ball is thrown straight up. At the top of its path its instantaneous speed is
A ball is thrown straight up. At the top of its path its acceleration is
A car accelerates at 2 m/s2. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 20 m/s?
If you drop a feather and a coin at the same time in a vacuum tube, which will reach the bottom of the tube first?
If a projectile is fired straight up at a speed of 30 m/s, the total time to return to its starting point is about
The vertical height attained by a basketball player who achieves a hang time of a full one second is about
Which has more momentum, a large truck moving at 30 miles per hour or a small truck moving at 30 miles per...