Momentum 1
What is the unit of velocity?
What is m/s
An object moves at 5 m/s and has a momentum of 25 kg·m/s. What is its mass?
What is 5 kg
If two objects have the same mass, which one has more momentum?
What is The one with the greater velocity
If the velocity of an object is reversed, what happens to its momentum?
The momentum reverses direction
What two quantities determine an object’s momentum
What is Mass and velocity
An object has a momentum of 12 kg·m/s and a mass of 3 kg. What is its velocity?
What is 4 m/s
Can two objects have the same momentum but different masses?
What is yes
Why does increasing velocity usually increase momentum more noticeably than increasing mass?
What is Velocity changes directly affect momentum and are often larger/more noticeable in motion
What happens to momentum if mass doubles and velocity stays the same
What is Momentum doubles
A 20 kg object has a momentum of 100 kg·m/s. What is its velocity
What is 5 m/s
Why does a fast-moving car have more momentum than a slow-moving one?
What is Greater velocity increases momentum
Why does doubling velocity have a greater effect on momentum than doubling mass in most real situations?
Because velocity changes are often larger and more significant than mass changes in motion
What happens to momentum if velocity is zero
What Momentum is zero
A 2000 kg truck has a momentum of 40,000 kg·m/s. What is its velocity?
What is 20 m/s
If an object’s mass stays the same but its speed increases, what happens to its momentum?
What is Momentum increases
An object moves in a straight line and then reverses direction while keeping the same speed. How does its momentum change?
The momentum changes sign but keeps the same magnitude
A 0.5 kg ball moves at 10 m/s. What is its momentum?
What is 5 kg·m/s
Which has more momentum: a heavy truck moving slowly or a light bike moving fast?
It depends on mass and velocity
Why is it harder to stop a fast-moving truck than a slow-moving car?
The truck has greater momentum
Why does momentum decrease if an object slows down, even if its mass remains constant?
What is Because momentum is directly proportional to velocity