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Newton Test
Newton is love, Newton is life!!!
Question | Answer |
---|---|
What is Newton's First Law? | An object at rest remains at rest, and an object in motion remains in motion, unless acted upon by an unbalanced force. |
According to Newton’s First Law of Motion, why would a student on roller skates eventually stop moving? | Friction will stop the student on roller skates. |
What is inertia? | It is resistance to a change in motion. More massive objects have more inertia. |
Why do roller coasters need to have a lap bar or shoulder bar? | So the person riding the roller coaster doesn't fly out of the ride and stays seated. |
Which boxes will move? Which boxes will not move? | The boxes that will move are box 1, box 2, and box 3. The box that won’t move is box 4. |
Show the net force calculation for each box. | Box 1: 8N + 0N = 8N Box 2: 5N - 2N = 3N Box 3: 6N + 6N + 6N = 18N Box 4: 7N - 3N = 4N - 4N = 0N |
What is Newton’s Second Law of Motion? | Acceleration is produced when unbalanced forces act on a mass. |
What is acceleration? What causes acceleration? | Acceleration is a change in speed OR direction of motion. An unbalanced force causes acceleration. |
What is Newton’s Third Law of Motion? | For every action, there is an equal, but opposite reaction. |
A basketball hits the floor with a force of 50N. What is the force and direction exerted by the floor on the ball? | The floor hits back with a force up 50N but the direction is changed to upwards because of Newton’s Third Law. |
What forces cause a rollerskater to move? | A push off the ground backwards makes the wheels on a rollerskater to move. |