Physics

# Problems

PhysicsProblems

### 4.3Newton's Second Law of Motion

21.
An object has a mass of $1 kg$ on Earth. What is its weight on the moon?
1. $1 upper N$
2. $1.67 upper N$
3. $9.8 upper N$
4. $10 upper N$
22.

A bathroom scale shows your mass as 55 kg. What will it read on the moon?

1. 9.4 kg
2. 10.5 kg
3. 55.0 kg
4. 91.9 kg

### 4.4Newton's Third Law of Motion

23.

A person pushes an object of mass 5.0 kg along the floor by applying a force. If the object experiences a friction force of 10 N and accelerates at 18 m/s2, what is the magnitude of the force exerted by the person?

1. −90 N
2. −80 N
3. 90 N
4. 100 N