Motion and Position Quiz

In order to determine an object’s location, you need a ______.

• time

• reference point

• speed

• displacement

Answer explanation

To determine an object's location, a reference point is needed. It serves as a fixed position from which measurements are made.

Motion can be described through a change in ______.

• speed

• distance

• position

• time

Answer explanation

Motion can be described through a change in position. Position is the location of an object in relation to a reference point. It is a key factor in understanding how an object moves and its displacement.

To determine if an object has changed position, you need to know its position relative to another object.

• True

• False

Answer explanation

To determine if an object has changed position, compare its position relative to another object. True is the correct choice.

Which of the following is the least useful object to use as a point of reference for describing the location of the parked car?

• the bird

• the streetlight

• the store

• the tree

Answer explanation

The bird is the least useful object to use as a point of reference for describing the location of the parked car because it can fly away and change its position easily.

Distance, a reference point, and a reference __________ are all needed to determine the position of an object.

Answer explanation

To determine the position of an object, distance, a reference point, and a reference direction are needed.

A train traveled 250 kilometers (km) from its starting point in 5 hours (h). If the train continues at the same average speed for another 4 hours, how far will it have traveled from its starting point?

• 200 km

• 250 km

• 450 km

• 500 km

Answer explanation

The train travels at an average speed of 50 km/h (250 km / 5 h). Therefore, in 4 hours, it will travel 200 km (50 km/h * 4 h). Adding this to the initial distance of 250 km, the train will have traveled 450 km in total. Thus, the correct choice is 450 km.

If you ride your bike around the block, returning to the exact point where you started, your displacement is _______________ m?

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You are in a car going 70 km/h and another car passes you going in the opposite direction at 70 km/h. Do both cars have the same velocity? Explain.

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Examine the distance-time graph. Which line represents travel at the fastest speed? Justify your answer.

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Tags

NGSS.MS-PS3-1

Describe the line that should be added for an object that is not moving with respect to the chosen frame of reference.

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NGSS.HS-PS2-1