14. A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train's acceleration be described?

The train's acceleration is negative.

The train's acceleration is positive.

The train will come to rest in 6 minutes.

15. What is instantaneous acceleration?

how fast a velocity is changing at a specific instant

how fast a speed is changing at a specific instant

how fast a direction is changing at a specific instant

17. When an unbalanced force acts on an object,

the object's motion does not change.

the weight of the object decreases.

the inertia of the object increases.

18. When a pair of balanced forces acts on an object, the net force that results is

greater in size than both forces combined.

greater in size than one of the forces.

equal in size to one of the forces.

20. The forces acting on a falling leaf are

air resistance and fluid friction.

21. Projectile motion is caused by

the downward force of gravity and an initial forward velocity.

23. An orange might roll off your cafeteria tray when you stop suddenly because of

the balanced forces acting on the orange.

the centripetal force acting on the orange.

the friction forces acting on the orange.

26. In which of the following are action and reaction forces involved?

when a tennis racket strikes a tennis ball

28. As an astronaut travels far away from Earth, her weight

decreases because gravity decreases.

decreases because her mass decreases.

increases because gravity increases.

remains the same because her mass remains the same.

29. The gravitational force between two objects increases as mass

increases or distance decreases.

decreases or distance decreases.

decreases or distance increases.

increases or distance increases.

30. As you push a cereal box across a tabletop, the sliding friction acting on the cereal box

acts in the direction opposite of motion.

acts in the direction of motion.

is usually greater than static friction.

31. Your weight equals your

mass times the acceleration due to gravity.

mass divided by the net force acting on you.

33. A passenger in the rear seat of a car moving at a steady speed is at rest relative to

a pedestrian on the corner ahead.

35. Which example describes constant acceleration due ONLY to a change in direction?

traveling around a circular track

increasing speed while traveling around a curve

40. A child walks several blocks to school (shown in yellow). Which statement or statements regarding this diagram is(are) TRUE? Mark ALL that apply.

The displacement is the red line.

Displacement is shown in red and distance is shown in yellow.

The distance the child walked was shorter than the displacement of the child.

The displacement is the yellow line.

Which of the following situations is an example of unbalanced forces acting upon an object?

A rock accelerating as it rolls down a hill.

A rope being pulled from both sides with equal force.

A car moving constantly at 30 miles per hour.

A science text book lying on the floor.

Which of the following ways are used to measure motion?

distance, speed, time and direction

prediction, distance, speed and time

Unit 4 Test Review: Force and Motion

Authored by Amy Cline

Science

9th - 12th Grade

NGSS covered

Used 10+ times

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65 questions

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MULTIPLE CHOICE QUESTION

30 sec • 2 pts

1. A person walks 1 mile every day for exercise, leaving her front porch at 9:00 a.m. and returning to her front porch at 9:25 a.m. What is the total displacement of her daily walk?

1 mile

25 minutes

none of the above

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

2. A person drives north 6 blocks, then turns west and drives 6 blocks. The driver then turns south and drives 6 blocks. How could the driver have made the distance shorter while maintaining the same displacement?

by driving west 6 blocks from the starting point

by driving north 4 blocks and west 7 blocks

by driving south 6 blocks from the starting point

by driving back to the starting point by the same route

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

3. Speed is the ratio of the distance an object moves to

the amount of time needed to travel the distance

the direction the object moves

the displacement of the object

the motion of the object

4. Instantaneous speed is measured

at the starting point.

when the object reaches its destination.

at a particular instant.

over the duration of the trip.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

5. A car traveled 60 km in 2 hours, 84 km in the next 1 hour, and then 68 km in 2 hours before reaching its destination. What was the car's average speed?

212 km/h

42.4 km/h

48 km/h

1060 km/h

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

6. A distance-time graph indicates that an object moves 100 m in 4 s and then remains at rest for 6 s. What is the average speed of the object?

50 m/s

25 m/s

10 m/s

100 m/s

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

7. A river current has a velocity of 5 km/h relative to the shore, and a boat moves in the same direction as the current 5 km/h relative to the river. How can the velocity of the boat relative to the shore be calculated?

by subtracting the river current vector from the boat's velocity vector

by dividing the river current vector by the boat's velocity vector

by multiplying the vectors

by adding the vectors

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Unit 4 Test Review: Force and Motion

1. A person walks 1 mile every day for exercise, leaving her front porch at 9:00 a.m. and returning to her front porch at 9:25 a.m. What is the total displacement of her daily walk?

2. A person drives north 6 blocks, then turns west and drives 6 blocks. The driver then turns south and drives 6 blocks. How could the driver have made the distance shorter while maintaining the same displacement?

3. Speed is the ratio of the distance an object moves to

4. Instantaneous speed is measured

5. A car traveled 60 km in 2 hours, 84 km in the next 1 hour, and then 68 km in 2 hours before reaching its destination. What was the car's average speed?

6. A distance-time graph indicates that an object moves 100 m in 4 s and then remains at rest for 6 s. What is the average speed of the object?

7. A river current has a velocity of 5 km/h relative to the shore, and a boat moves in the same direction as the current 5 km/h relative to the river. How can the velocity of the boat relative to the shore be calculated?

8. Vector addition is used when motion involves

9. The rate at which velocity changes is called

10. Objects in free fall near the surface of the Earth experience

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