Q.1.
Which unit should be used to measure mass (the amount of matter an object contains)?
Q.2.
What causes a backpack full of books to feel heavy when you lift it?
Q.3.
In a diagram, a force is represented by what?
Q.4.
Which of the following would you use when measuring force?
Q.5.
What are forces measured in?
Q.6.
What is a force?
Q.7.
Which of the following is a force?
Q.8.
Forces can cause objects to change what?
Q.9.
In which direction does gravity exert force (as experienced by people or objects on Earth)?
Q.10.
If you roll a ball across the carpet, which forces will cause it to slow down and then stop?