Get started!

  • Stage 1

    Answer 4 questions correctly in a row.

Yasmin is moving apartments. When she lifts one of the boxes, it experiences a net force of 21 newtons and accelerates upward at 
1.8 m/
s
2
.
What is the mass of the box?
If your answer is a decimal, round to the nearest tenth.
kilograms
ref_doc_title.

Confetti

Jumping to stage 1 of 1

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools