Motion Review

C) position

Motion occurs when an object changes its __________.

A) massB) volumeC) positionD) force

C) meter

The SI unit of distance is the __________.A) gramB) literC) meterD) mile

A) position

The distance between an object and a reference point is the object's __________.

A) positionB) velocityC) displacementD) neutral point

B) displacement

The distance between the final position and the starting position is the __________.

A) accelerationB) displacementC) velocityD) differential

A) speed

__________ is the distance an object travels per unit of time.

A) SpeedB) VelocityC) AccelerationD) Displacement

C) 3.7 km south

If you travel 1.7 km north from your house at noon, and at 6:00 PM you travel 5.4 km south, what is your displacement?

A) 7.1 km southB) 3.7 kmC) 3.7 km southD) 7.1 km north

B) 11 km

At 8:00 AM you leave home and walk 0.5 km to a friend's house. At 11:30 AM you return home, then travel by car to the mall, which is 10 km away, and arrive at 11:45 AM. What is the total distance traveled?

A) 10.5 kmB) 11 kmC) 10 kmD) 2.8 km/h

D) velocity

The direction and speed of an object is described by its __________.

A) displacementB) average speedC) average displacementD) velocity

C) 4 km/h

If a student leaves home at 7:30 AM to walk to his school 2 km away, stops at a neighbor's house for 15 min, then arrives at school at 8:00 AM, what is the student's average speed for the trip to school?

A) 2 km/hB) 2.67 km/hC) 4 km/hD) 8 km/h

C) Dividing total distance traveled by the total time

Average speed is found by __________.A) dividing the displacement by the total

time spentB) multiplying total distance traveled by

the total timeC) dividing total distance traveled by the

total timeD) multiplying the displacement by the

total time spent

A) Instantaneous speed

__________ is the speed of an object at any instant of time.

A) Instantaneous speedB) Average speedC) VelocityD) Acceleration

A) 6 miles, B) 0 miles

You run from your house to a friend’s house that is 3 miles away. You then walk home. A) What distance did you travel?B) What was your displacement?

A) S = d/t

Which of the following equations is used for calculating speed?

A) s = d/tB) s = t/dC) s = (vf - vI)D) s = (vf - vI/t)

D) 0.33 km/min

What is Bill's average running speed?

A) 3.0 km/minB) 3.3 km/minC) 330 km/minD) 0.33 km/min

B) Jane

Which runner has the slowest average speed for this run?

A) DaisyB) JaneC) BillD) Joe

C) Either speed or direction

A change in velocity means a change in _______.A) direction onlyB) speed onlyC) either speed or directionD) always both speed and direction

D) 1.4 m/s

Calculate the speed of a swimmer who swims 200 m in 140 s.

A) 1.0 m/sB) 1.8 m/sC) 1.9 m/sD) 1.4 m/s

A) 6.2 m/s

In a 500-m race, a runner finishes in 80.4 s. Calculate the speed of this runner.

A) 6.2 m/sB) 7.8 m/sC) 4.5 m/sD) 9.0 m/s

1-B, 2-C, 3-A

Match the description to the picture.1. The object is standing

still.2. The object moves at a

constant speed for 5 seconds, then stands still.

3. The object moves at a constant speed.

A

B

C

B) 0 m/min

What was Swimmer A's average speed during the period 10 min to 20 min?

A) 40 m/minB) 0 m/minC) 400 m/minD) 4000 m/min

A, CBDBD

C) 1.7 m/s

Calculate the speed of a swimmer who swims 150 m in 88 s.

A) 1.1 m/sB) 1.9 m/sC) 1.7 m/sD) 2.0 m/s

1-B, 2-A

Match the description to the picture.1. The object starts

moving slowly, then speeds up.

2. The object moves with a steady speed away from the start, then reverses direction and moves towards home at the same speed.

A

B

B

Which object is moving faster (A or B)?

A) 8.2 m/s

In a 150-m race, a runner finishes in 18.2 s. Calculate the speed of this runner.

A) 8.2 m/sB) 7.7 m/sC) 8.9 m/sD) 10.2 m/s

A) 31 km, B) 3 km EAST

If each square is 1 km, A) What is the distance traveled?B) What is the displacement?

D) 67.7 km/h

A freight train travels from Louisburg to Hamburg, a distance of 420 km. If the route takes 6.2 h, what is the train's speed?

A) 55 km/hB) 63.2 km/hC) 72.2 km/hD) 67.7 km/h

1 and 3

Suppose you run three different paths from A to B. Along which path(s) would your distance travelled be different from your displacement?

A) 55.7 km/h

A freight train travels from Miamistown to Fredericksburg, a distance of 680 km. If the route takes 12.2 h, what is the train's speed?

A) 55.7 km/hB) 66.3 km/hC) 68.8 km/hD) 82.2 km/h

True-as long as it returns to where it started from.

True or False: An object moving for 10 s can have zero displacement. Explain.

C) 87.5 km/h

A passenger train travels from Larkspur to Collossett, a distance of 210 km. If the route takes 2.4 h, what is the train's speed?

A) 42.3 km/hB) 60.3 km/hC) 87.5 km/hD) 90.0 km/h

D) 4800 m/hWhat was Swimmer C's average speed?

A) 4.8 m/hB) 2.4 m/hC) 2400 m/hD) 4800 m/h

B) 76.8 km/h

A passenger train travels from Orange Grove to Lyman, a distance of 430 km. If the route takes 5.6 h, what is the train's speed?

A) 72.2 km/hB) 76.8 km/hC) 80.4 km/hD) 92.8 km/h