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  • Stage 1

    Answer 5 out of 6 questions correctly.

Read the passage about a car collision.
Tom is driving to work and doesn't notice that he is approaching a red light. Suddenly, Tom's car collides with Brian's, which is stopped at the light. Both cars are damaged by the collision, but the drivers walk away uninjured. What forces are involved in this crash, and how are Tom and Brian protected from injury? Newton's three laws of motion can help us understand.
Newton's first law states that an object's motion does not change unless an unbalanced force acts on the object. Use Newton's first law to complete the sentence.
During the collision, 
Tom's engine

 applies a force to Tom's car to make it stop suddenly.
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