Practice Exam Answers

Which formula can be used to find the centripetal acceleration of an orbiting object?

Which is an action that can cause an object to move or change its state of motion?

Which is the best example of decreasing entropy?

Two objects are interacting, but stay stationary. Which best describes what is happening to the action and reaction forces?

Two objects are interacting, but stay stationary. Which best describes what is happening to the action and reaction forces?

A boy is running to the east and jumps into a stationary boat in a lake. Once the boy lands in the boat, the boat moves to the east. Which best compares the initial momentum of the boy with the final momentum of the boy/boat system?

Which is an action that can cause an object to move or change its state of motion?

What did Johannes Kepler contribute to the study of planets?

Which describes the movement of a fluid during convection?

A 150 g egg is dropped from 3 point 0 meters. The egg is moving at 4.4 meters per second right before it hits the ground. The egg comes to a stop in 0 point 0 7 2 seconds. What is the magnitude of force that the ground exerted on the egg?

A boat travels in a straight path that is 25 degrees west of north. Which describes the values of the west and north components of the boat’s displacement?

Luke pulls a sled using a force of 65 cap n for a distance of 25 m across level ground. The rope Luke pulls forms an angle of 25 degrees with the ground. About how much work does Luke do on the sled?

Which energy transformation occurs after a skydiver reaches terminal velocity?

Which statements describe the use of gamma rays to treat cancer? Choose two correct answers.

An object with a mass of 20 kilograms has a net force of 80 cap n acting on it. What is the acceleration of the object?

Which best illustrates projectile motion?

A boat travels in a straight path that is 25 degrees west of north. Which describes the values of the west and north components of the boat’s displacement?

An object with a mass of 20 kilograms has a net force of 80 cap n acting on it. What is the acceleration of the object?

In the equation for centripetal force, which expression represents the centripetal acceleration of the object?

A cyclist rides at a constant speed of 4 point 5 m/s around a curve. If the centripetal acceleration is 29 m/s squared , what is the radius of the curve?

Sixty-three joules of heat are added to a closed system. The initial internal energy of the system is 58 J, and the final internal energy is 93 J. How much work is being done by the system?

A 150 g egg is dropped from 3 point 0 meters. The egg is moving at 4.4 meters per second right before it hits the ground. The egg comes to a stop in 0 point 0 7 2 seconds. What is the magnitude of force that the ground exerted on the egg?

If a 4 point 5 kilograms object is dropped from a height of 6 point 0 m , what will be its velocity when it is halfway toward the ground? (Use g is equal to 9 point 8 0 the fraction with numerator m and denominator s squared , and ignore air resistance.)

In the equation for centripetal force, which expression represents the centripetal acceleration of the object?

A cyclist rides at a constant speed of 4 point 5 m/s around a curve. If the centripetal acceleration is 29 m/s squared , what is the radius of the curve?

Which formula can be used to find the centripetal acceleration of an orbiting object?

Which statement describes why energy is released in a nuclear fission reaction based on mass-energy equivalence?

Which statement describes why energy is released in a nuclear fission reaction based on mass-energy equivalence?

In the heat equation, what does Q represent?

Which statements describe the use of gamma rays to treat cancer? Choose two correct answers.

Which is the best example of decreasing entropy?

Suppose an object’s initial velocity is 10 meters per second and its final velocity is 4 meters per second Mass is constant. What can best be concluded about the object based on the work-energy theorem?

If a 4 point 5 kilograms object is dropped from a height of 6 point 0 m , what will be its velocity when it is halfway toward the ground? (Use g is equal to 9 point 8 0 the fraction with numerator m and denominator s squared , and ignore air resistance.)

A boy is running to the east and jumps into a stationary boat in a lake. Once the boy lands in the boat, the boat moves to the east. Which best compares the initial momentum of the boy with the final momentum of the boy/boat system?

Suppose an object’s initial velocity is 10 meters per second and its final velocity is 4 meters per second Mass is constant. What can best be concluded about the object based on the work-energy theorem?

Luke pulls a sled using a force of 65 cap n for a distance of 25 m across level ground. The rope Luke pulls forms an angle of 25 degrees with the ground. About how much work does Luke do on the sled?

Sixty-three joules of heat are added to a closed system. The initial internal energy of the system is 58 J, and the final internal energy is 93 J. How much work is being done by the system?

What did Johannes Kepler contribute to the study of planets?

Which energy transformation occurs after a skydiver reaches terminal velocity?

Which best illustrates projectile motion?

Which describes the movement of a fluid during convection?