MISA - Maryland Integrated Science Assessment Forces, Motion, and Interactions Questions and Answers

Question 1

A soccer ball with a mass of 0.45 kg is kicked by a player. The ball accelerates at 20 m/s². What is the net force applied to the ball?

Accepted Answer

9 N

Answer

44.4 N

Answer

0.0225 N

Answer

20.45 N

Question 2

A student is riding a skateboard at a constant velocity. Suddenly, the skateboard hits a crack in the sidewalk and stops, but the student continues to move forward. Which of the following principles best explains why the student continues to move forward?

Accepted Answer

Inertia (Newton's First Law)

Answer

Gravitational Force

Answer

Friction

Answer

Newton's Third Law (Action-Reaction)

Question 3

Which of the following scenarios describes an object experiencing a net unbalanced force?

Accepted Answer

A satellite orbiting Earth at a constant speed.

Answer

A book resting motionless on a tabletop.

Answer

A car driving in a straight line at a constant 60 mph.

Answer

A helium balloon floating stationary in the middle of a room.

Question 4

A swimmer pushes backward on the water with their hands. In response, the water pushes the swimmer forward. This is a direct application of which principle?

Accepted Answer

The Law of Action-Reaction (Newton's Third Law)

Answer

The Law of Inertia (Newton's First Law)

Answer

The Law of Force and Acceleration (Newton's Second Law)

Answer

The Law of Universal Gravitation

Question 5

According to Newton's Law of Universal Gravitation, the gravitational force between two objects is inversely proportional to the square of the distance between them. If the distance between two planets is doubled, what happens to the gravitational force between them?

Accepted Answer

It is reduced to one-fourth of its original value.

Answer

It is doubled.

Answer

It is halved.

Answer

It remains the same.

Question 6

A student pushes a heavy box across a rough floor but the box does not move. Which statement best explains this situation?

Accepted Answer

The force of static friction is equal to and opposite the student's pushing force.

Answer

The force of the student's push is less than the force of gravity on the box.

Answer

The box has too much inertia to be moved.

Answer

The applied force is converted entirely into heat.