Question

1. The gravitational pull of the sun on Earth keeps Earth orbiting around the sun. Which statement is correct about the force that Earth exerts on the sun?(1 point)
Earth pulls the sun away from itself with a force equal to the ratio of the mass of the sun to the mass of Earth.

Earth pulls the sun away from itself with an equal force.

Earth pulls the sun toward itself with an equal force.

Earth pulls the sun toward itself with a force equal to the ratio of the mass of the sun to the mass of Earth.

2. Two rockets with the same mass are accelerated. Rocket A accelerates twice as quickly as rocket B. Which statement is correct?(1 point)

The motor in rocket A is twice as powerful as the motor in rocket B.

The motor in rocket A is four times as powerful as the motor in rocket B.

The motor in rocket A is half as powerful as the motor in rocket B.

The motor in rocket A is half as powerful as the motor in rocket B.

3. Five motorboats are being tested to see which reaches the highest velocity in the same amount of time. After graphing the acceleration versus force for each motorboat, the graph is a sloped line with a y-intercept of zero. Which statement is correct about these motorboats?(1 point)

All five motorboats have the same mass, which cannot be calculated from the graph.

All five motorboats have the same final velocity, which cannot be calculated from the graph.

All five motorboats have the same final velocity, which can be calculated from the graph.

All five motorboats have the same mass, which can be calculated from the graph.

4. Three objects are released to the ground while the mass and net force of each is recorded. Air resistance is assumed to be negligible. Which statement is correct about all three objects?(1 point)

No statements can be made about the objects without measuring the acceleration of each.

The ratio of mass to acceleration is constant across all objects.

The ratio of net force to acceleration is constant across all objects.

The ratio of net force to mass is constant across all objects.

5. A helicopter is accelerating up into the air while it is also accelerating due north. Which statement about the forces acting on the helicopter is true?(1 point)

The drag on the helicopter is directed downward and to the south.

The drag on the helicopter is directed upward and to the south.

The drag on the helicopter is directed downward and to the north.

The drag on the helicopter is directed upward and to the north.

Answer 1

Answer:

1. Earth pulls the sun away from itself with an equal force.

Answer 2

Answer:

Rocket A is twice as powerful