First Law
What is another name for Newton’s First Law?
What is Law of Inertia?
What is the formula for Newton’s Second Law?
What is F=ma
For every action force there is an ______ and ______ reaction force.
What is equal and opposite
An object that is 12 kg and accelerates at 3 m/s², has how much force acting on it?
What is 36 N
A box is pushed across the floor with a constant force of 50 N. Friction acting on the box is also 50 N. What is the net force on the box? How will the box move?
What is 0 N and it will move at constant velocity because balanced forces mean no acceleration.
A passenger moves forward when a car stops suddenly. Why?
What is Inertia, the body wants to continue moving.
If force increases and mass stays the same, what happens to acceleration?
What is it increases
Do action-reaction forces act on the same object?
What is No
What is the acceleration of an object that is 12 kg and has a force acting on it of 60 N?
What is 5 m/s2
If mass doubles and force stays the same, what happens to acceleration?
What is it's cut in half.
What type of force is required to change motion?
What is unbalanced force
Why does a truck accelerate slower than a car with the same force?
What is it has more mass
Why does a rocket move upward?
What is Gas/blast pushes down; rocket pushed up
A 7 kg object accelerates at 4 m/s². Find the force.
What is 28 N
A 10 kg object accelerates at 2 m/s².
Then the force doubles.
What is the new acceleration?
Step 1: F = 20 N
Step 2: New force = 40 N
Step 3: a = 40 ÷ 10 = 4 m/s²
What is 4 m/s²
Explain why a rolling soccer ball eventually stops.
What is friction
If acceleration doubles and mass stays the same, what happens to force?
What is the force doubles
When you walk forward, what force pushes you forward?
What is the ground pushing back on you
A 100 N force pushes a 20 kg box. Find acceleration.
What is 5 m/s2
A car is moving at constant speed. Are forces balanced or unbalanced? Explain.
What is balanced forces (net force = 0)