Lesson --- intro to Newton's laws

Multiple Choice

What must happen to an object in motion to change its motion?

• Momentum

• Inertia

• An unbalanced force

• A balanced force

Fill in the Blank

Objects with greater mass have more ______.

Multiple Choice

Newton's 2nd law combines which variables?

• acceleration, force, and mass

• force, mass, and velocity

• force, mass, and, air resistance

• speed, velocity, and acceleration

Multiple Choice

What is the SI unit for force?

• Kg

• grams

• m/s

• Newton, N

Open Ended

Solve the problem.

Math Response

What force must act on a 50 kg mass to give it an acceleration of 7.2 m/s² ?

Type answer here

Correct Answer: 360

Deg^°

Rad

Math Response

If a 0.15 kg baseball is thrown with a force of 75 N, what is it’s acceleration?

Type answer here

Correct Answer: 500

Deg^°

Rad

Math Response

An 8,500,000 kg airplane lands with an acceleration of 35 m/s².  What braking force is necessary to stop the plane?

Type answer here

Correct Answer: 297500000

Deg^°

Rad

Math Response

The wind pushes a paper cup across the ground with a force of 0.125 N.  It accelerates at 5 m/s².  What is the mass of the cup?

Type answer here

Correct Answer: 0.025

Deg^°

Rad