Newton's First Law Exam

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

Tags

NGSS.MS-PS2-2

What is the name for a push or pull?

• A movement
• A force
• Speed
• Density

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The image above shows two opposite forces acting on a rolling cart, what can we say is true about the effect of the forces on the cart?

• It cannot be determined without knowing which man is stronger.

• It cannot be determined because one man is taller than the other.

• The forces are unbalanced, and net force on the cart moves it to the left.

• The forces are unbalanced, and net force on the cart moves it to the right.

Brad and Erin decide to have a tug of war contest. Erin pulls the rope with all her might and so does Brad. Sadly, Brad only pulls with half the force that Erin pulls with.

Which way will the rope move?

• Towards Erin, since the forces are balanced.

• Towards Brad, since the forces are balanced.

• Towards Erin, since the forces are unbalanced.

• Towards Brad, since the forces are unbalanced.

The image above shows two opposite forces acting on a rolling cart, what can we say is true about the effect of the forces on the cart?

• It cannot be determined without knowing which man is stronger.

• The forces are not balanced, because one man is taller than the other.

• The forces are balanced. But, the forces acting on the cart have increased and the cart’s motion is affected.

• The forces are balanced. Thus, there is no change in forces acting on the cart and the cart’s motion is not affected.

A cup of coffee sits on the dashboard of an automobile. The car goes around a sharp curve. Even though you hold the cup still, coffee still splashes out

• density.

• friction.

• gravity.

• inertia.

The shopping cart in the picture is moving forward. What force moves it forward?

• The force of the man pushing on the handle.

• The force of the wheels pushing on the floor.

• The force of the floor pushing on the wheels.

• The weight of the shopping cart supplied by gravity.

A driver sets his cars cruise control on a flat highway, causing the car to travel at a constant velocity. Which is true in this situation?

• The cruise control decreases friction.

• The cruise control causes the car to experience an unbalanced force.

• The force from the driver's foot is needed to keep the car from stopping.

• The force of friction is balanced out by the forward force applied by the engine.

Your teacher was given an apple by a student trying to get on her good side. It sits on her desk the whole year, not moving.

You know that, if the apple were to roll off the desk, it would fall to the ground. So what is keeping the apple motionless on the desk?

• Once placed on the desk, gravity is no longer acting on the apple.

• The downward force of gravity on the apple is balanced by a larger force on the apple by the desk.

• The downward force of gravity on the apple is balanced by an equal but opposite force on the apple by the desk.

• The downward force of gravity on the apple is balanced by an equal but opposite force on the apple by the teacher.

This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Tags

NGSS.HS-PS2-1