Question

19. According to Newton’s Third Law of Motion, what happens when you push against a wall?(1 point)
Responses

The wall doesn’t move, so no force is applied
The wall doesn’t move, so no force is applied

The wall pushes back on you with the same force
The wall pushes back on you with the same force

The wall pushes back on you with a greater force
The wall pushes back on you with a greater force

You push the wall, but it cannot push back
You push the wall, but it cannot push back
Question 20
20. Two students are pushing identical carts, but one cart is empty, and the other is full of books. According to Newton’s Second Law of Motion, which cart will accelerate more quickly if both students push with the same force?(1 point)
Responses

The full cart, because it has more mass
The full cart, because it has more mass

The empty cart, because it has less mass
The empty cart, because it has less mass

Both carts will accelerate at the same rate
Both carts will accelerate at the same rate

Neither cart will accelerate due to equal force

Answer 1

19. The wall pushes back on you with the same force.
(Every force has an equal and opposite reaction.)

20. The empty cart, because it has less mass.
(From F = ma, with the same force the smaller mass gives larger acceleration.)