Physics Fall Semester Exam

In the absence of air friction, the horizontal component of a projectile's velocity doesn't change as the projectile moves.

Speed is______________.

A table cloth can be withdrawn from under a stack of plates without toppling it if the table cloth is jerked quickly. The reason this can be done is that __________.

Two objects move toward each other because of gravitational attraction. As the objects get closer and closer, the force between them __________.

In physics, work is defined as __________.

At the instant a ball is thrown horizontally with a large force, an identical ball is dropped from the same height Which ball hits the ground first?

How much work is done on a 50 N rock that you carry horizontally across a 10 m room?

Which one of the following steps is NOT a part of the scientific method?

A hypothesis is __________.

A 10N force and a 30N force act in the same direction on an object. What is the net force on the object?

How many joules of work are done on an object when a force of 10N pushes it 5M?

If you drop a feather and a coin at the same time, negating air resistance, which will reach the bottom of the tube first?

What color are the walls?

A player hits a ball with a bat. The action force is the impact of the bat against the ball. What is the reaction to this force?

An object that has kinetic energy must be __________.

Power is defined as __________________.

When working with electricity, you should?

To calculate how much stored energy an object contains at a certain height, you multiply ________________.

In the absence of air resistance, objects fall at constant __________.

A cannon with a barrel velocity of 100m/s launches a cannonball horizontally from a tower. Neglecting air resistance, where will the cannonball be 1 second later?

Ten seconds after starting from rest, a car is moving at 40m/s. What is the car's average acceleration? All answers in meters per second squared.

An archer shoots an arrow. Consider the action force to be the bow string against the arrow. The reaction to this force is the __________.

How much power is required to do 100J of work on an object in 2 seconds?

When you look at the speedometer in a moving car, you can see the car's __________.

According to the well-known equation "energy equals mass times the speed of light squared," __________.

A tin can whirled on the end of a string moves in a circle because __________.

Newton reasoned that the gravitational attraction between Earth and the moon must be __________.

A block is at rest on an incline. The force of friction necessary to prevent the block from sliding increases when the incline angle is __________.

Kinetic energy of an object is equal to __________.

If the force of gravity suddenly stopped acting on the planets, they would __________.

Compared to its mass on earth, the mass of a ? object on the moon is __________.

Which of the following would NOT be considered a projectile?

A ball is thrown straight up. At the top of its path its instantaneous speed is __________.

As a pendulum swings back and forth ______________.

How much does a 1kg bag of nails weigh?

If the mass of Earth increased, with no change in radius, your weight would __________.

A car has a mass of 1000 kg and accelerates 2 meters per second squared. What is the magnitude of the force acting on the car?

A 10N force and a 30N force act on an object in opposite directions. What is the net force on the object?

A person is attracted towards the center of the earth by a 500 N gravitational force. The force with which the earth is attracted toward the person is __________.

After a cannon ball is fired into frictionless space, the amount of force needed to keep it going equals __________.

What is the resultant force when adding a 3N force to an 15N force?

The principal of Waxahachie High School is?

How much work is done on a 50-N rock that you lift 10 m?

The force of gravity on you is greatest when you are standing __________

Which has greater kinetic energy, a car traveling at 30km/hr or a half-as-massive car traveling at 60 km/hr?

A high school student hits a nail with a hammer. During the collision, there is a force __________.

When something falls to the ground, it accelerates. This acceleration is called the acceleration due to gravity and is symbolized by the letter g. What is the value of g on the earth's surface? All values in meters per second squared

Potential energy is the energy an object has because of its __________.

Suppose we observe light bouncing back and forth between two vertical clock mirrors in a spaceship that is whizzing past us at a very high speed. Compared to what the person in the spaceship sees, we see the spaceship clock as running __________.

One object has twice as much mass as another object. The first object also has twice as much __________.